NRL: the United States Navy's defense laboratory that conducts basic and applied research for the Navy in a variety of scientific and technical disciplines


naval tactical data system: a shipboard system for collecting and displaying tactical data


naval weaponry: weaponry for warships


nave: the central area of a church


navigational instrument: an instrument used for navigating


navigation light: light on an airplane that indicates the plane's position and orientation; red light on the left (port) wing tip and green light on the right (starboard) wing tip


navy base: base of operations for a naval fleet


navy yard: a military shipyard


naval shipyard: a military shipyard


nearside: the side of a vehicle nearest the kerb


nebuchadnezzar: a very large wine bottle holding the equivalent of 20 normal bottles of wine; used especially for display


neck: an opening in a garment for the neck of the wearer; a part of the garment near the wearer's neck


neck opening: an opening in a garment for the neck of the wearer; a part of the garment near the wearer's neck


neck: a narrow part of an artifact that resembles a neck in position or form


neckband: a band around the collar of a garment


neck brace: a brace worn to steady the neck


neckcloth: an ornamental white cravat


stock: an ornamental white cravat


neckerchief: a kerchief worn around the neck


necklace: jewelry consisting of a cord or chain (often bearing gems) worn about the neck as an ornament (especially by women)


necklet: decoration worn about the neck (fur piece or tight necklace) as an ornament


neckline: the line formed by the edge of a garment around the neck


neckpiece: an article of apparel worn about the neck


necktie: neckwear consisting of a long narrow piece of material worn (mostly by men) under a collar and tied in knot at the front


tie: neckwear consisting of a long narrow piece of material worn (mostly by men) under a collar and tied in knot at the front


neckwear: articles of clothing worn about the neck


needle: a sharp pointed implement (usually steel)


needle: a slender pointer for indicating the reading on the scale of a measuring instrument


needlenose pliers: small pliers with long thin jaws for fine work


needlepoint: embroidery consisting of allover embroidered canvas resembling tapestry


needlepoint embroidery: embroidery consisting of allover embroidered canvas resembling tapestry


needlework: a creation created or assembled by needle and thread


needlecraft: a creation created or assembled by needle and thread


nefazodone: an antidepressant drug (trade name Serzone)


Serzone: an antidepressant drug (trade name Serzone)


negative: a piece of photographic film showing an image with light and shade or colors reversed


negative magnetic pole: the pole of a magnet that points toward the south when the magnet is suspended freely


negative pole: the pole of a magnet that points toward the south when the magnet is suspended freely


south-seeking pole: the pole of a magnet that points toward the south when the magnet is suspended freely


negative pole: the terminal of a battery that is connected to the negative plate


negligee: a loose dressing gown for women


neglige: a loose dressing gown for women


peignoir: a loose dressing gown for women


wrapper: a loose dressing gown for women


housecoat: a loose dressing gown for women


nelfinavir: a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs


Viracept: a protease inhibitor (trade name Viracept) used in treating HIV usually in combination with other drugs


neolith: a stone tool from the Neolithic Age


neomycin: an antibiotic obtained from an actinomycete and used (as a sulphate under the trade name Neobiotic) as an intestinal antiseptic in surgery


fradicin: an antibiotic obtained from an actinomycete and used (as a sulphate under the trade name Neobiotic) as an intestinal antiseptic in surgery


Neobiotic: an antibiotic obtained from an actinomycete and used (as a sulphate under the trade name Neobiotic) as an intestinal antiseptic in surgery


neon lamp: a lamp consisting of a small gas-discharge tube containing neon at low pressure; luminescence is produced by the action of currents at high frequencies that are wrapped a few turns around the tube


neon induction lamp: a lamp consisting of a small gas-discharge tube containing neon at low pressure; luminescence is produced by the action of currents at high frequencies that are wrapped a few turns around the tube


neon tube: a lamp consisting of a small gas-discharge tube containing neon at low pressure; luminescence is produced by the action of currents at high frequencies that are wrapped a few turns around the tube


Neosporin: trade name for a topical drug containing several antibacterials; used as an ointment for skin irritations and in the form of eyedrops for minor eye infections


neostigmine: a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis


Prostigmin: a cholinergic drug (trade name Prostigmin) used to treat some ophthalmic conditions and to treat myasthenia gravis


nephoscope: a measuring instrument that uses a grid for measuring the altitude, direction, and velocity of movement of clouds


nest: a kind of gun emplacement


nest: furniture pieces made to fit close together


nest egg: device consisting of an artificial egg left in a nest to induce hens to lay their eggs in it


net: an open fabric of string or rope or wire woven together at regular intervals


network: an open fabric of string or rope or wire woven together at regular intervals


mesh: an open fabric of string or rope or wire woven together at regular intervals


meshing: an open fabric of string or rope or wire woven together at regular intervals


meshwork: an open fabric of string or rope or wire woven together at regular intervals


net: a trap made of netting to catch fish or birds or insects


net: game equipment consisting of a strip of netting dividing the playing area in tennis or badminton


net: a goal lined with netting (as in soccer or hockey)


network: (broadcasting) a communication system consisting of a group of broadcasting stations that all transmit the same programs


network: (electronics) a system of interconnected electronic components or circuits


electronic network: (electronics) a system of interconnected electronic components or circuits


network: a system of intersecting lines or channels


neutron bomb: atom bomb that produces lethal neutrons with less blast


nevirapine: a non-nucleoside reverse transcriptase inhibitor (trade name Viramune) used to treat AIDS and HIV


Viramune: a non-nucleoside reverse transcriptase inhibitor (trade name Viramune) used to treat AIDS and HIV


newel: the central pillar of a circular staircase


newel post: the post at the top or bottom of a flight of stairs; it supports the handrail


newel: the post at the top or bottom of a flight of stairs; it supports the handrail


Newgate: a former prison in London notorious for its unsanitary conditions and burnt down in riots in 1780; a new prison was built on the same spot but was torn down in 1902


newmarket: a long close-fitting coat worn for riding in the 19th century


New River Gorge Bridge: a steel arch bridge across New River at Fayetteville, West Virginia


newspaper: the physical object that is the product of a newspaper publisher


paper: the physical object that is the product of a newspaper publisher


newsroom: a reading room (in a library or club) where newspapers and other periodicals can be read


newsroom: an office in which news is processed by a newspaper or news agency or television or radio station


newsstand: a stall where newspapers and other periodicals are sold


Newtonian telescope: reflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis


Newtonian reflector: reflecting telescope in which the image is viewed through an eyepiece perpendicular to main axis


New York Stock Exchange: a stock exchange in New York


N. Y. Stock Exchange: a stock exchange in New York


NYSE: a stock exchange in New York


big board: a stock exchange in New York


nib: the writing point of a pen


pen nib: the writing point of a pen


niblick: an iron with considerable loft


nine iron: an iron with considerable loft


nicad: a rechargeable battery with a nickel cathode and a cadmium anode; often used in emergency systems because of its low discharge rate when not in use


nickel-cadmium accumulator: a rechargeable battery with a nickel cathode and a cadmium anode; often used in emergency systems because of its low discharge rate when not in use


nick: (British slang) a prison


nickel-iron battery: a storage battery having a nickel oxide cathode and an iron anode with an electrolyte of potassium hydroxide; each cell gives about 1.2 volts


nickel-iron accumulator: a storage battery having a nickel oxide cathode and an iron anode with an electrolyte of potassium hydroxide; each cell gives about 1.2 volts


Nicol prism: optical device that produces plane-polarized light


nifedipine: calcium blocker (trade name Procardia); appears to increase the risk of recurrent heart attacks


Procardia: calcium blocker (trade name Procardia); appears to increase the risk of recurrent heart attacks


night bell: a doorbell to be used at night


nightcap: a cloth cap worn in bed


nightgown: lingerie consisting of a loose dress designed to be worn in bed by women


gown: lingerie consisting of a loose dress designed to be worn in bed by women


nightie: lingerie consisting of a loose dress designed to be worn in bed by women


night-robe: lingerie consisting of a loose dress designed to be worn in bed by women


nightdress: lingerie consisting of a loose dress designed to be worn in bed by women


night latch: doorlock operated by a knob on the inside and a key on the outside


night-light: light (as a candle or small bulb) that burns in a bedroom at night (as for children or invalids)


night-line: a fishing line with baited hooks left in the water to catch fish over night


nightshirt: nightclothes worn by men


nightwear: garments designed to be worn in bed


sleepwear: garments designed to be worn in bed


nightclothes: garments designed to be worn in bed


ninepin: a bowling pin of the type used in playing ninepins or (in England) skittles


skittle: a bowling pin of the type used in playing ninepins or (in England) skittles


skittle pin: a bowling pin of the type used in playing ninepins or (in England) skittles


ninepin ball: ball used to knock down ninepins


skittle ball: ball used to knock down ninepins


nine-spot: one of four playing cards in a deck with nine pips on the face


nine: one of four playing cards in a deck with nine pips on the face


ninon: a fine strong sheer silky fabric made of silk or rayon or nylon


nipple: a flexible cap on a baby's feeding bottle or pacifier


nipple shield: a rubber or plastic shield to protect the nipples of nursing women


niqab: a face veil covering the lower part of the face (up to the eyes) worn by observant Muslim women


Nissen hut: a prefabricated hut of corrugated iron having a semicircular cross section


Quonset hut: a prefabricated hut of corrugated iron having a semicircular cross section


nitrazepam: a hypnotic and sedative drug of the benzodiazepine type


nitrofurantoin: derivative of nitrofuran used as an antibacterial medicine (trade name Macrodantin) effective against a broad range of Gram-positive and Gram-negative bacteria; used to treat infections of the urinary tract


Macrodantin: derivative of nitrofuran used as an antibacterial medicine (trade name Macrodantin) effective against a broad range of Gram-positive and Gram-negative bacteria; used to treat infections of the urinary tract


Nitrospan: trade names for nitroglycerin used as a coronary vasodilator in the treatment of angina pectoris


Nitrostat: trade names for nitroglycerin used as a coronary vasodilator in the treatment of angina pectoris


nitrous oxide: inhalation anesthetic used as an anesthetic in dentistry and surgery


laughing gas: inhalation anesthetic used as an anesthetic in dentistry and surgery


node: (computer science) any computer that is hooked up to a computer network


client: (computer science) any computer that is hooked up to a computer network


guest: (computer science) any computer that is hooked up to a computer network


nog: a wooden block built into a masonry wall so that joinery structure can be nailed to it


nogging: rough brick masonry used to fill in the gaps in a wooden frame


noisemaker: a device (such as a clapper or bell or horn) used to make a loud noise at a celebration


nomogram: a graphic representation of numerical relations


nomograph: a graphic representation of numerical relations


non-dedicated file server: (computer science) a file server that can be used simultaneously as a workstation


nonsmoker: a passenger car for passengers who want to avoid tobacco smoke


nonsmoking car: a passenger car for passengers who want to avoid tobacco smoke


non-nucleoside reverse transcriptase inhibitor: an antiviral drug used against HIV; binds directly to reverse transcriptase and prevents RNA conversion to DNA; often used in combination with other drugs


NNRTI: an antiviral drug used against HIV; binds directly to reverse transcriptase and prevents RNA conversion to DNA; often used in combination with other drugs


nonsteroidal anti-inflammatory: an anti-inflammatory drug that does not contain steroids


nonsteroidal anti-inflammatory drug: an anti-inflammatory drug that does not contain steroids


NSAID: an anti-inflammatory drug that does not contain steroids


nontricyclic: a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO


nontricyclic drug: a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO


nontricyclic antidepressant: a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO


nontricyclic antidepressant drug: a class of antidepressant drugs that are not tricyclic drugs and do not act by inhibiting MAO


non-volatile storage: computer storage that is not lost when the power is turned off


nonvolatile storage: computer storage that is not lost when the power is turned off


noose: a loop formed in a cord or rope by means of a slipknot; it binds tighter as the cord or rope is pulled


running noose: a loop formed in a cord or rope by means of a slipknot; it binds tighter as the cord or rope is pulled


slip noose: a loop formed in a cord or rope by means of a slipknot; it binds tighter as the cord or rope is pulled


Norfolk jacket: loose-fitting single-breasted jacket


noria: a water wheel with buckets attached to the rim; used to raise water for transfer to an irrigation channel


Norinyl: trade name for an oral contraceptive containing norethindrone and mestranol


Norlestrin: trade name for an oral contraceptive containing estradiol and norethindrone


Nor-Q-D: trade name for an oral contraceptive containing norethindrone


nortriptyline: a tricyclic antidepressant drug (trade name Pamelor) used along with psychotherapy to treat dysthymic depression; may interact dangerously if taken with other drugs


Pamelor: a tricyclic antidepressant drug (trade name Pamelor) used along with psychotherapy to treat dysthymic depression; may interact dangerously if taken with other drugs


nose: a front that resembles a human nose (especially the front of an aircraft)


nose: the front or forward projection of a tool or weapon


nosebag: a canvas bag that is used to feed an animal (such as a horse); covers the muzzle and fastens at the top of the head


feedbag: a canvas bag that is used to feed an animal (such as a horse); covers the muzzle and fastens at the top of the head


noseband: a strap that is the part of a bridle that goes over the animal's nose


nosepiece: a strap that is the part of a bridle that goes over the animal's nose


nose cone: front consisting of the conical head of a missile or rocket that protects the payload from heat during its passage through the atmosphere


ogive: front consisting of the conical head of a missile or rocket that protects the payload from heat during its passage through the atmosphere


nose flute: a flute that is played by blowing through the nostrils (used in some Asian countries)


nosepiece: armor plate that protects the nose


nose ring: a ring worn on the nose as an ornament or on the nose of an animal to control it


nosewheel: a wheel located under the nose of an airplane that is part of the plane's landing gear


nostrum: patent medicine whose efficacy is questionable


notch: a V-shaped or U-shaped indentation carved or scratched into a surface


notebook: a small compact portable computer


notebook computer: a small compact portable computer


notion: (usually plural) small personal articles or clothing or sewing items


notions counter: counter where notions are sold


novel: a printed and bound book that is an extended work of fiction


novillada: a bullfight in which the bulls are less than four years old


novobiocin: an antibiotic obtained from an actinomycete and used to treat infections by Gram-positive bacteria


nozzle: a projecting spout from which a fluid is discharged


nose: a projecting spout from which a fluid is discharged


n-type semiconductor: a semiconductor in which electrical conduction is due chiefly to the movement of electrons


nuclear-powered ship: ship whose motive power comes from the energy of a nuclear reactor


nuclear reactor: (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements


reactor: (physics) any of several kinds of apparatus that maintain and control a nuclear reaction for the production of energy or artificial elements


nuclear rocket: a rocket engine in which a nuclear reactor is used to heat a propellant


nuclear weapon: a weapon of mass destruction whose explosive power derives from a nuclear reaction


atomic weapon: a weapon of mass destruction whose explosive power derives from a nuclear reaction


nucleoside reverse transcriptase inhibitor: an antiviral drug used against HIV; is incorporated into the DNA of the virus and stops the building process; results in incomplete DNA that cannot create a new virus; often used in combination with other drugs


NRTI: an antiviral drug used against HIV; is incorporated into the DNA of the virus and stops the building process; results in incomplete DNA that cannot create a new virus; often used in combination with other drugs


nude: a painting of a naked human figure


nude painting: a painting of a naked human figure


nude: a statue of a naked human figure


nude sculpture: a statue of a naked human figure


nude statue: a statue of a naked human figure


number: an item of merchandise offered for sale


number cruncher: a computer capable of performing a large number of mathematical operations per second


numdah: an embroidered rug made from a coarse Indian felt


numdah rug: an embroidered rug made from a coarse Indian felt


nammad: an embroidered rug made from a coarse Indian felt


nunnery: the convent of a community of nuns


nun's habit: a long loose habit worn by nuns in a convent


nursery: a child's room for a baby


baby's room: a child's room for a baby


nut: a small (usually square or hexagonal) metal block with internal screw thread to be fitted onto a bolt


nut and bolt: a fastener made by screwing a nut onto a threaded bolt


nutcracker: a compound lever used to crack nuts open


nux vomica: a medicine made from the seeds of an Asiatic tree; contains strychnine and brucine; formerly used as a stimulant


nylon: a synthetic fabric


nylons: women's stockings made from a sheer material (nylon or rayon or silk)


nylon stocking: women's stockings made from a sheer material (nylon or rayon or silk)


rayons: women's stockings made from a sheer material (nylon or rayon or silk)


rayon stocking: women's stockings made from a sheer material (nylon or rayon or silk)


silk stocking: women's stockings made from a sheer material (nylon or rayon or silk)


nystatin: an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes


Mycostatin: an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes


Nystan: an antifungal and antibiotic (trade names Mycostatin and Nystan) discovered in New York State; derived from soil fungi actinomycetes


oar: an implement used to propel or steer a boat


oast: a kiln for drying hops


oast house: a building containing an oast (a kiln for drying hops); usually has a conical or pyramidal roof


obelisk: a stone pillar having a rectangular cross section tapering towards a pyramidal top


object ball: the billiard ball that is intended to be the first ball struck by the cue ball


objectification: a concrete representation of an abstract idea or principle


objective: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed


objective lens: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed


object lens: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed


object glass: the lens or system of lenses in a telescope or microscope that is nearest the object being viewed


objet d'art: a work of art of some artistic value


art object: a work of art of some artistic value


piece: a work of art of some artistic value


oblique bandage: a bandage in which successive turns proceed obliquely up or down a limb


oboe: a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece


hautboy: a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece


hautbois: a slender double-reed instrument; a woodwind with a conical bore and a double-reed mouthpiece


oboe da caccia: an alto oboe; precursor of the English horn


oboe d'amore: an oboe pitched a minor third lower than the ordinary oboe; used to perform baroque music


observation dome: lookout consisting of a dome-shaped observatory


observation station: a station set up for making observations of something


observatory: a building designed and equipped to observe astronomical phenomena


obstacle: an obstruction that stands in the way (and must be removed or surmounted or circumvented)


obstruction: any structure that makes progress difficult


obstructor: any structure that makes progress difficult


obstructer: any structure that makes progress difficult


impediment: any structure that makes progress difficult


impedimenta: any structure that makes progress difficult


obturator: a prosthesis used to close an opening (as to close an opening of the hard palate in cases of cleft palate)


obverse: the side of a coin or medal bearing the principal stamp or design


ocarina: egg-shaped terra cotta wind instrument with a mouthpiece and finger holes


sweet potato: egg-shaped terra cotta wind instrument with a mouthpiece and finger holes


octant: a measuring instrument for measuring angles to a celestial body; similar to a sextant but with 45 degree calibration


odd-leg caliper: caliper having the points on its legs both curve in the same direction


odometer: a meter that shows mileage traversed


hodometer: a meter that shows mileage traversed


mileometer: a meter that shows mileage traversed


milometer: a meter that shows mileage traversed


oeil de boeuf: a circular or oval window; 17th or 18th century French architecture


oeuvre: the total output of a writer or artist (or a substantial part of it)


work: the total output of a writer or artist (or a substantial part of it)


body of work: the total output of a writer or artist (or a substantial part of it)


office: place of business where professional or clerical duties are performed


business office: place of business where professional or clerical duties are performed


office building: a building containing offices where work is done


office block: a building containing offices where work is done


office furniture: furniture intended for use in an office


officer's mess: a mess for the exclusive use of officers


off-line equipment: electronic equipment not in direct communication (or under the control of) the central processing unit


auxiliary equipment: electronic equipment not in direct communication (or under the control of) the central processing unit


ogee: a molding that (in section) has the shape of an S with the convex part above and the concave part below


cyma reversa: a molding that (in section) has the shape of an S with the convex part above and the concave part below


ogee arch: a pointed arch having an S-shape on both sides


keel arch: a pointed arch having an S-shape on both sides


Ohio State University: a university in Columbus, Ohio


ohmmeter: a meter for measuring electrical resistance in ohms


oil: oil paint containing pigment that is used by an artist


oil color: oil paint containing pigment that is used by an artist


oil colour: oil paint containing pigment that is used by an artist


oil burner: a furnace that burns oil


oil furnace: a furnace that burns oil


oilcan: a can with a long nozzle to apply oil to machinery


oilcloth: cloth treated on one side with a drying oil or synthetic resin


oil filter: a filter that removes impurities from the oil used to lubricate an internal-combustion engine


oil future: petroleum bought or sold at an agreed price for delivery at a specified future date


petroleum future: petroleum bought or sold at an agreed price for delivery at a specified future date


oil heater: heater that burns oil (as kerosine) for heating or cooking


oilstove: heater that burns oil (as kerosine) for heating or cooking


kerosene heater: heater that burns oil (as kerosine) for heating or cooking


kerosine heater: heater that burns oil (as kerosine) for heating or cooking


oil lamp: a lamp that burns oil (as kerosine) for light


kerosene lamp: a lamp that burns oil (as kerosine) for light


kerosine lamp: a lamp that burns oil (as kerosine) for light


oil paint: paint in which a drying oil is the vehicle


oil painting: a picture painted with oil paints


oil pipeline: a pipeline used to transport oil


oil pump: a pump that keeps a supply of oil on moving parts


oil refinery: a refinery for petroleum


petroleum refinery: a refinery for petroleum


oilskin: a macintosh made from cotton fabric treated with oil and pigment to make it waterproof


slicker: a macintosh made from cotton fabric treated with oil and pigment to make it waterproof


oil slick: a thin film of oil floating on top of water (especially crude oil spilled from a ship)


oilstone: a whetstone for use with oil


oil tanker: a cargo ship designed to carry crude oil in bulk


oiler: a cargo ship designed to carry crude oil in bulk


tanker: a cargo ship designed to carry crude oil in bulk


tank ship: a cargo ship designed to carry crude oil in bulk


oil well: a well that yields or has yielded oil


oiler: a well that yields or has yielded oil


ointment: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation


unction: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation


unguent: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation


balm: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation


salve: semisolid preparation (usually containing a medicine) applied externally as a remedy or for soothing an irritation


old school tie: necktie indicating the school the wearer attended


olive drab: a cloth of an olive-brown color used for military uniforms


olive drab: military uniform of the United States Army; made from cloth of a dull olive color


olive-drab uniform: military uniform of the United States Army; made from cloth of a dull olive color


Olympian Zeus: a seated statue of the supreme god of ancient Greek mythology created for the temple at Olympia; the statue was 40 feet tall and rested on a base that was 12 feet high


omelet pan: pan for cooking omelets


omelette pan: pan for cooking omelets


omnidirectional antenna: an antenna that sends or receives signals equally in all directions


nondirectional antenna: an antenna that sends or receives signals equally in all directions


omnirange: a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing


omnidirectional range: a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing


omnidirectional radio range: a navigational system consisting of a network of radio beacons that provide aircraft with information about exact position and bearing


one-spot: a domino or die whose upward face shows one pip


one-way street: a street on which vehicular traffic is allowed to move in only one direction


onion dome: a dome that is shaped like a bulb; characteristic of Russian and Byzantine church architecture


op art: a style of abstractionism popular in the 1960s; produces dramatic visual effects with colors and contrasts that are difficult for the eye to resolve


open-air market: a public marketplace where food and merchandise is sold


open-air marketplace: a public marketplace where food and merchandise is sold


market square: a public marketplace where food and merchandise is sold


open circuit: an incomplete electrical circuit in which no current flows


open-end wrench: a wrench having parallel jaws at fixed separation (often on both ends of the handle)


tappet wrench: a wrench having parallel jaws at fixed separation (often on both ends of the handle)


opener: a hand tool used for opening sealed containers (bottles or cans)


open-hearth furnace: a furnace for making steel in which the steel is placed on a shallow hearth and flames of burning gas and hot air play over it


opening: a vacant or unobstructed space that is man-made


openside plane: a woodworking plane designed to cut rabbets


rabbet plane: a woodworking plane designed to cut rabbets


open sight: rear gunsight having an open notch instead of a peephole or telescope


open weave: a weave in which warp threads never come together, leaving interstices in the fabric


openwork: ornamental work (such as embroidery or latticework) having a pattern of openings


opera: a building where musical dramas are performed


opera house: a building where musical dramas are performed


opera cloak: a large cloak worn over evening clothes


opera hood: a large cloak worn over evening clothes


operating microscope: binocular microscope used in surgery to provide a clear view of small and inaccessible parts of the body (as in microsurgery)


operating room: a room in a hospital equipped for the performance of surgical operations


OR: a room in a hospital equipped for the performance of surgical operations


operating theater: a room in a hospital equipped for the performance of surgical operations


operating theatre: a room in a hospital equipped for the performance of surgical operations


surgery: a room in a hospital equipped for the performance of surgical operations


operating table: table on which the patient lies during a surgical operation


ophthalmoscope: medical instrument for examining the retina of the eye


opiate: a narcotic drug that contains opium or an opium derivative


opium: an addictive narcotic extracted from seed capsules of the opium poppy


opium den: a building where opium is sold and used


optical bench: apparatus for observation and measurement of optical phenomena


optical device: a device for producing or controlling light


optical disk: a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface


optical disc: a disk coated with plastic that can store digital data as tiny pits etched in the surface; is read with a laser that scans the surface


optical fiber: a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images


glass fiber: a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images


optical fibre: a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images


glass fibre: a very thin fiber made of glass that functions as a waveguide for light; used in bundles to transmit images


optical instrument: an instrument designed to aid vision


optical pyrometer: a pyrometer that uses the color of the light emitted by a hot object


pyroscope: a pyrometer that uses the color of the light emitted by a hot object


optical telescope: an astronomical telescope designed to collect and record light from cosmic sources


oracle: a shrine where an oracular god is consulted


orange grove: grove of orange trees


orb web: a circular spider web


orchestra: seating on the main floor in a theater


orchestra pit: lowered area in front of a stage where an orchestra accompanies the performers


pit: lowered area in front of a stage where an orchestra accompanies the performers


OR circuit: a gate circuit in a computer that fires when any of its inputs fire


OR gate: a gate circuit in a computer that fires when any of its inputs fire


order book: a book in which customers' orders are entered; usually makes multiple copies of the order


ordinary: (heraldry) any of several conventional figures used on shields


ordinary: an early bicycle with a very large front wheel and small back wheel


ordinary bicycle: an early bicycle with a very large front wheel and small back wheel


organ: wind instrument whose sound is produced by means of pipes arranged in sets supplied with air from a bellows and controlled from a large complex musical keyboard


pipe organ: wind instrument whose sound is produced by means of pipes arranged in sets supplied with air from a bellows and controlled from a large complex musical keyboard


organdy: a sheer stiff muslin


organdie: a sheer stiff muslin


organic light-emitting diode: a self-luminous diode (it glows when an electrical field is applied to the electrodes) that does not require backlighting or diffusers


OLED: a self-luminous diode (it glows when an electrical field is applied to the electrodes) that does not require backlighting or diffusers


organ loft: a gallery occupied by a church organ


organ pipe: the flues and stops on a pipe organ


pipe: the flues and stops on a pipe organ


pipework: the flues and stops on a pipe organ


organ stop: a graduated set of organ pipes of like tone quality


organza: a fabric made of silk or a silklike fabric that resembles organdy


oriel: a projecting bay window corbeled or cantilevered out from a wall


oriel window: a projecting bay window corbeled or cantilevered out from a wall


oriflamme: a red or orange-red flag used as a standard by early French kings


O ring: a gasket consisting of a flat ring of rubber or plastic; used to seal a joint against high pressure


Orlon: an acrylic fiber or the lightweight crease-resistant fabric made with Orlon yarns


orlop deck: the fourth or lowest deck


orlop: the fourth or lowest deck


fourth deck: the fourth or lowest deck


orphanage: a public institution for the care of orphans


orphans' asylum: a public institution for the care of orphans


orphenadrine: a skeletal muscle relaxant (trade name Norflex) used to treat severe muscle strain and Parkinsonism


Norflex: a skeletal muscle relaxant (trade name Norflex) used to treat severe muscle strain and Parkinsonism


orphrey: a richly embroidered edging on an ecclesiastical vestment


orrery: planetarium consisting of an apparatus that illustrates the relative positions and motions of bodies in the solar system by rotation and revolution of balls moved by wheelwork; sometimes incorporated in a clock


orthicon: a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons


image orthicon: a now obsolete picture pickup tube in a television camera; electrons emitted from a photoemissive surface in proportion to the intensity of the incident light are focused onto the target causing secondary emission of electrons


orthochromatic film: a photographic film sensitive to green and blue and violet light


orthopter: heavier-than-air craft that is propelled by the flapping of wings


ornithopter: heavier-than-air craft that is propelled by the flapping of wings


orthoscope: an ophthalmoscope with a layer of water to neutralize the refraction of the cornea


oscillator: generator that produces sonic oscillations or alternating current


oscillogram: the recording produced by an oscillograph


oscillograph: a device for making a record of the wave forms of fluctuating voltages or currents


oscilloscope: electronic equipment that provides visual images of varying electrical quantities


scope: electronic equipment that provides visual images of varying electrical quantities


cathode-ray oscilloscope: electronic equipment that provides visual images of varying electrical quantities


CRO: electronic equipment that provides visual images of varying electrical quantities


ossuary: any receptacle for the burial of human bones


otoscope: medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane)


auriscope: medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane)


auroscope: medical instrument consisting of a magnifying lens and light; used for examining the external ear (the auditory meatus and especially the tympanic membrane)


ottoman: thick cushion used as a seat


pouf: thick cushion used as a seat


pouffe: thick cushion used as a seat


puff: thick cushion used as a seat


hassock: thick cushion used as a seat


oubliette: a dungeon with the only entrance or exit being a trap door in the ceiling


Ouija: a board with the alphabet on it; used with a planchette to spell out supernatural messages


Ouija board: a board with the alphabet on it; used with a planchette to spell out supernatural messages


out-basket: a wood or metal receptacle placed on your desk to hold your outgoing material


out-tray: a wood or metal receptacle placed on your desk to hold your outgoing material


outboard motor: internal-combustion engine that mounts at stern of small boat


outboard: internal-combustion engine that mounts at stern of small boat


outboard motorboat: a motorboat with an outboard motor


outboard: a motorboat with an outboard motor


outbuilding: a building that is subordinate to and separate from a main building


outerwear: clothing for use outdoors


overclothes: clothing for use outdoors


outfall: the outlet of a river or drain or other source of water


outfield: the area of a baseball playing field beyond the lines connecting the bases


outfit: a set of clothing (with accessories)


getup: a set of clothing (with accessories)


rig: a set of clothing (with accessories)


turnout: a set of clothing (with accessories)


outfitter: a shop that provides equipment for some specific purpose


outhouse: a small outbuilding with a bench having holes through which a user can defecate


privy: a small outbuilding with a bench having holes through which a user can defecate


earth-closet: a small outbuilding with a bench having holes through which a user can defecate


jakes: a small outbuilding with a bench having holes through which a user can defecate


outlet box: (electricity) receptacle consisting of the metal box designed for connections to a wiring system


outpost: a military post stationed at a distance from the main body of troops


output: what is produced in a given time period


outturn: what is produced in a given time period


turnout: what is produced in a given time period


output device: electronic or electromechanical equipment connected to a computer and used to transfer data out of the computer in the form of text, images, sounds, or other media


outrigger: a stabilizer for a canoe; spars attach to a shaped log or float parallel to the hull


outrigger canoe: a seagoing canoe (as in South Pacific) with an outrigger to prevent it from upsetting


outside caliper: caliper for measuring outside dimensions; points on its legs curve inward


outside clinch: a clinch with the end of the line outside the loop


outside mirror: car mirror that reflects the view at side and behind car


outsider art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists


self-taught art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists


vernacular art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists


naive art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists


primitive art: a genre of art and outdoor constructions made by untrained artists who do not recognize themselves as artists


outsole: the outer sole of a shoe or boot that is the bottom of the shoe and makes contact with the ground


outwork: subsidiary defensive structure lying outside the main fortified area


Oval Office: the office of the President of the United States in the White House


oven: kitchen appliance used for baking or roasting


oven thermometer: a thermometer that registers the temperature inside an oven


ovenware: heat-resistant dishware in which food can be cooked as well as served


overall: (usually plural) work clothing consisting of denim trousers (usually with a bib and shoulder straps)


overall: a loose protective coverall or smock worn over ordinary clothing for dirty work


boilersuit: a loose protective coverall or smock worn over ordinary clothing for dirty work


boilers suit: a loose protective coverall or smock worn over ordinary clothing for dirty work


overcast: a long whipstitch or overhand stitch overlying an edge to prevent raveling


overcasting: a long whipstitch or overhand stitch overlying an edge to prevent raveling


overcoat: an additional protective coating (as of paint or varnish)


overcoating: an additional protective coating (as of paint or varnish)


overdrive: a high gear used at high speeds to maintain the driving speed with less output power


overgarment: a garment worn over other garments


outer garment: a garment worn over other garments


overhand knot: a simple small knot (often used as part of other knots)


overhand stitch: a stitch passing over an edge vertically


overhang: projection that extends beyond or hangs over something else


overhead: (nautical) the top surface of an enclosed space on a ship


overhead projector: a projector operated by a speaker; projects the image over the speaker's head


overlay: a layer of decorative material (such as gold leaf or wood veneer) applied over a surface


overload: an excessive burden


overburden: an excessive burden


overload: an electrical load that exceeds the available electrical power


overmantel: a shelf over a mantelpiece


overnighter: a small traveling bag to carry clothing and accessories for staying overnight


overnight bag: a small traveling bag to carry clothing and accessories for staying overnight


overnight case: a small traveling bag to carry clothing and accessories for staying overnight


overpass: bridge formed by the upper level of a crossing of two highways at different levels


flyover: bridge formed by the upper level of a crossing of two highways at different levels


overprint: something added by overprinting


surprint: something added by overprinting


override: a manually operated device to correct the operation of an automatic device


overshoe: footwear that protects your shoes from water or snow or cold


overskirt: an outer skirt worn over another skirt


over-the-counter drug: a drug that is sold without a prescription


over-the-counter medicine: a drug that is sold without a prescription


over-the-counter market: a stock exchange where securities transactions are made via telephone and computer rather than on the floor of an exchange


OTC market: a stock exchange where securities transactions are made via telephone and computer rather than on the floor of an exchange


Ovocon: trade name for an oral contraceptive containing estradiol and norethindrone


ovolo: a convex molding having a cross section in the form of a quarter of a circle or of an ellipse


thumb: a convex molding having a cross section in the form of a quarter of a circle or of an ellipse


quarter round: a convex molding having a cross section in the form of a quarter of a circle or of an ellipse


Ovral: trade name for an oral contraceptive containing estradiol and norgestrel


Ovrette: trade name for an oral contraceptive containing norgestrel


Ovulen: trade name for an oral contraceptive containing mestranol and a progestin compound


oxacillin: a form of penicillin resistant to penicillinase and effective against penicillin-resistant staphylococci


oxaprozin: a nonsteroidal anti-inflammatory drug (trade name Daypro)


Daypro: a nonsteroidal anti-inflammatory drug (trade name Daypro)


oxazepam: a tranquilizing drug (trade name Serax) used to treat anxiety and insomnia and alcohol withdrawal


Serax: a tranquilizing drug (trade name Serax) used to treat anxiety and insomnia and alcohol withdrawal


oxbow: a wooden framework bent in the shape of a U; its upper ends are attached to the horizontal yoke and the loop goes around the neck of an ox


Oxbridge: general term for an ancient and prestigious and privileged university (especially Oxford University or Cambridge University)


oxcart: a cart that is drawn by an ox


oxeye: an oval or round dormer window


oxford: a low shoe laced over the instep


Oxford University: a university in England


Oxford: a university in England


oximeter: a measuring instrument that measures the oxygen in arterial blood


oxyacetylene torch: a blowtorch that burns oxyacetylene


oxygen mask: a breathing device that is placed over the mouth and nose; supplies oxygen from an attached storage tank


oxyphenbutazone: an anti-inflammatory drug (trade name Tandearil) used to treat arthritis and bursitis


Tandearil: an anti-inflammatory drug (trade name Tandearil) used to treat arthritis and bursitis


oxyphencyclimine: an anticholinergic drug (trade name Daricon) used in treating peptic ulcers


Daricon: an anticholinergic drug (trade name Daricon) used in treating peptic ulcers


oxytetracycline: a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections


hydroxytetracycline: a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections


oxytetracycline hydrochloride: a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections


Terramycin: a yellow crystalline antibiotic (trademark Terramycin) obtained from a soil actinomycete; used to treat various bacterial and rickettsial infections


oxytocic: a drug that induces labor by stimulating contractions of the muscles of the uterus


oxytocic drug: a drug that induces labor by stimulating contractions of the muscles of the uterus


oyster bar: a bar (as in a restaurant) that specializes in oysters prepared in different ways


oyster bed: a workplace where oysters are bred and grown


oyster bank: a workplace where oysters are bred and grown


oyster park: a workplace where oysters are bred and grown


pace car: a high-performance car that leads a parade of competing cars through the pace lap and then pulls off the course


pacemaker: an implanted electronic device that takes over the function of the natural cardiac pacemaker


artificial pacemaker: an implanted electronic device that takes over the function of the natural cardiac pacemaker


pacifier: anything that serves to pacify


pack: a convenient package or parcel (as of cigarettes or film)


pack: a bundle (especially one carried on the back)


pack: a sheet or blanket (either dry or wet) to wrap around the body for its therapeutic effect


pack: a cream that cleanses and tones the skin


face pack: a cream that cleanses and tones the skin


package: a wrapped container


parcel: a wrapped container


packaged goods: groceries that are packaged for sale


package store: a store that sells alcoholic beverages for consumption elsewhere


liquor store: a store that sells alcoholic beverages for consumption elsewhere


off-licence: a store that sells alcoholic beverages for consumption elsewhere


packaging: material used to make packages


packet: a small package or bundle


packing box: a large crate in which goods are packed for shipment or storage


packing case: a large crate in which goods are packed for shipment or storage


packinghouse: a plant where livestock are slaughtered and processed and packed as meat products


packing plant: a plant where livestock are slaughtered and processed and packed as meat products


packinghouse: a building where foodstuffs are processed and packed


packing needle: a large needle used to sew up canvas packages


packsaddle: a saddle for pack animals to which loads can be attached


packthread: a strong three-ply twine used to sew or tie packages


pad: a flat mass of soft material used for protection, stuffing, or comfort


pad: a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp


inkpad: a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp


inking pad: a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp


stamp pad: a block of absorbent material saturated with ink; used to transfer ink evenly to a rubber stamp


padding: artifact consisting of soft or resilient material used to fill or give shape or protect or add comfort


cushioning: artifact consisting of soft or resilient material used to fill or give shape or protect or add comfort


paddle: a short light oar used without an oarlock to propel a canoe or small boat


boat paddle: a short light oar used without an oarlock to propel a canoe or small boat


paddle: an instrument of punishment consisting of a flat board


paddle: a blade of a paddle wheel or water wheel


paddle: small wooden bat with a flat surface; used for hitting balls in various games


paddle box: a wooden covering for the upper part of a paddlewheel


paddle-box: a wooden covering for the upper part of a paddlewheel


paddle steamer: a steam vessel propelled by paddle wheels


paddle-wheeler: a steam vessel propelled by paddle wheels


paddlewheel: a large wheel fitted with paddles and driven by an engine in order to propel a boat


paddle wheel: a large wheel fitted with paddles and driven by an engine in order to propel a boat


paddock: pen where racehorses are saddled and paraded before a race


padlock: a detachable lock; has a hinged shackle that can be passed through the staple of a hasp or the links in a chain and then snapped shut


page printer: a printer that prints one page at a time


page-at-a-time printer: a printer that prints one page at a time


pagoda: an Asian temple; usually a pyramidal tower with an upward curving roof


paillasse: mattress consisting of a thin pad filled with straw or sawdust


palliasse: mattress consisting of a thin pad filled with straw or sawdust


paint: a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating


pigment: a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid); dries to form a hard coating


paintball: a capsule filled with water-soluble dye used as a projectile in playing the game of paintball


paintball gun: an air gun used in the game of paintball; designed to simulate a semiautomatic


paintbox: a box containing a collection of cubes or tubes of artists' paint


paintbrush: a brush used as an applicator (to apply paint)


painter: a line that is attached to the bow of a boat and used for tying up (as when docking or towing)


painting: graphic art consisting of an artistic composition made by applying paints to a surface


picture: graphic art consisting of an artistic composition made by applying paints to a surface


paint roller: a roller that has an absorbent surface used for spreading paint


paisley: a soft wool fabric with a colorful swirled pattern of curved shapes


pajama: (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers


pyjama: (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers


pj's: (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers


jammies: (usually plural) loose-fitting nightclothes worn for sleeping or lounging; have a jacket top and trousers


pajama: a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries


pyjama: a pair of loose trousers tied by a drawstring around the waist; worn by men and women in some Asian countries


palace: official residence of an exalted person (as a sovereign)


palace: a large and stately mansion


castle: a large and stately mansion


palace: a large ornate exhibition hall


palanquin: a closed litter carried on the shoulders of four bearers


palankeen: a closed litter carried on the shoulders of four bearers


paleolith: a stone tool from the Paleolithic age


palestra: a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes


palaestra: a public place in ancient Greece or Rome devoted to the training of wrestlers and other athletes


palette: board that provides a flat surface on which artists mix paints and the range of colors used


pallet: board that provides a flat surface on which artists mix paints and the range of colors used


palette knife: a spatula used by artists for mixing or applying or scraping off oil paints


palisade: fortification consisting of a strong fence made of stakes driven into the ground


pall: burial garment in which a corpse is wrapped


shroud: burial garment in which a corpse is wrapped


cerement: burial garment in which a corpse is wrapped


winding-sheet: burial garment in which a corpse is wrapped


winding-clothes: burial garment in which a corpse is wrapped


pallet: a mattress filled with straw or a pad made of quilts; used as a bed


pallet: a hand tool with a flat blade used by potters for mixing and shaping clay


pallet: a portable platform for storing or moving goods that are stacked on it


pallette: one of the rounded armor plates at the armpits of a suit of armor


palette: one of the rounded armor plates at the armpits of a suit of armor


palliative: remedy that alleviates pain without curing


alleviant: remedy that alleviates pain without curing


alleviator: remedy that alleviates pain without curing


pallium: cloak or mantle worn by men in ancient Rome


pallium: (Roman Catholic Church) vestment consisting of a band encircling the shoulders with two lappets hanging in front and back


pan: shallow container made of metal


pan: cooking utensil consisting of a wide metal vessel


cooking pan: cooking utensil consisting of a wide metal vessel


panacea: hypothetical remedy for all ills or diseases; once sought by the alchemists


nostrum: hypothetical remedy for all ills or diseases; once sought by the alchemists


catholicon: hypothetical remedy for all ills or diseases; once sought by the alchemists


cure-all: hypothetical remedy for all ills or diseases; once sought by the alchemists


panache: a feathered plume on a helmet


Panama Canal: a ship canal 40 miles long across the Isthmus of Panama built by the United States (1904-1914)


panatela: a long slender cigar


panetela: a long slender cigar


panetella: a long slender cigar


pancake turner: turner for serving or turning pancakes


panchromatic film: photographic film sensitive to light of all colors (including red)


panda car: a police cruiser


Pandora's box: (Greek mythology) a box that Zeus gave to Pandora with instructions that she not open it; she gave in to her curiosity and opened it; all the miseries and evils flew out to afflict mankind


pane: sheet glass cut in shapes for windows or doors


pane of glass: sheet glass cut in shapes for windows or doors


window glass: sheet glass cut in shapes for windows or doors


panel: sheet that forms a distinct (usually flat and rectangular) section or component of something


panel: a soft pad placed under a saddle


panel heating: heating system consisting of wall or floor or baseboard or ceiling panels containing electric conductors or heating pipes


paneling: a panel or section of panels in a wall or door


panelling: a panel or section of panels in a wall or door


pane: a panel or section of panels in a wall or door


panel light: a light to illuminate an instrument panel


panhandle: the handle of a pan


panic button: a button to push in order to summon help in case of an emergency


pannier: set of small hoops used to add fullness over the hips


pannier: a large basket (usually one of a pair) carried by a beast of burden or on by a person


pannier: either of a pair of bags or boxes hung over the rear wheel of a vehicle (as a bicycle)


pannikin: a small pan or cup (usually of tin)


panopticon: a circular prison with cells distributed around a central surveillance station; proposed by Jeremy Bentham in 1791


panopticon: an area where everything is visible


panorama: a picture (or series of pictures) representing a continuous scene


cyclorama: a picture (or series of pictures) representing a continuous scene


diorama: a picture (or series of pictures) representing a continuous scene


panoramic sight: gunsight (a telescopic device for an artillery piece) that can be rotated horizontally in a full circle


panpipe: a primitive wind instrument consisting of several parallel pipes bound together


pandean pipe: a primitive wind instrument consisting of several parallel pipes bound together


syrinx: a primitive wind instrument consisting of several parallel pipes bound together


pantaloon: trousers worn in former times


pantechnicon: a large moving van (especially one used for moving furniture)


pantheon: (antiquity) a temple to all the gods


pantheon: a monument commemorating a nation's dead heroes


pantie: short underpants for women or children (usually used in the plural)


panty: short underpants for women or children (usually used in the plural)


scanty: short underpants for women or children (usually used in the plural)


step-in: short underpants for women or children (usually used in the plural)


panting: any fabric used to make trousers


trousering: any fabric used to make trousers


pant leg: the leg of a pair of trousers


trouser leg: the leg of a pair of trousers


pantograph: mechanical device used to copy a figure or plan on a different scale


pantry: a small storeroom for storing foods or wines


larder: a small storeroom for storing foods or wines


buttery: a small storeroom for storing foods or wines


pants suit: a pair of pants and a matching jacket worn by women


pantsuit: a pair of pants and a matching jacket worn by women


panty girdle: a woman's undergarment that combines a girdle and panties


pantyhose: a woman's tights consisting of underpants and stockings


panzer: an armored vehicle or tank


papal cross: a cross with three crossbars


papaverine: an alkaloid medicine (trade name Kavrin) obtained from opium; used to relax smooth muscles; it is nonaddictive


Kavrin: an alkaloid medicine (trade name Kavrin) obtained from opium; used to relax smooth muscles; it is nonaddictive


paperback book: a book with paper covers


paper-back book: a book with paper covers


paperback: a book with paper covers


softback book: a book with paper covers


softback: a book with paper covers


soft-cover book: a book with paper covers


soft-cover: a book with paper covers


paper chain: a chain made of loops of colored paper; used to decorate a room


paper clip: a wire or plastic clip for holding sheets of paper together


paperclip: a wire or plastic clip for holding sheets of paper together


gem clip: a wire or plastic clip for holding sheets of paper together


paper cutter: a cutting implement for cutting sheets of paper to the desired size


paper doll: a piece of paper cut or folded into the shape of a human being


paper fastener: a fastener for holding a sheet of paper in place


paper feed: a device for inserting sheets of paper into a printer or typewriter


paper mill: a mill where paper is manufactured


paper plate: a disposable plate made of cardboard


paper towel: a disposable towel made of absorbent paper


paperweight: a weight used to hold down a stack of papers


parabolic mirror: a parabolic reflector for light radiation


parabolic reflector: a concave reflector used to produce a parallel beam when the source is placed at its focus or to focus an incoming parallel beam


paraboloid reflector: a concave reflector used to produce a parallel beam when the source is placed at its focus or to focus an incoming parallel beam


parachute: rescue equipment consisting of a device that fills with air and retards your fall


chute: rescue equipment consisting of a device that fills with air and retards your fall


parallel bars: gymnastic apparatus consisting of two parallel wooden rods supported on uprights


bars: gymnastic apparatus consisting of two parallel wooden rods supported on uprights


parallel circuit: a closed circuit in which the current divides into two or more paths before recombining to complete the circuit


shunt circuit: a closed circuit in which the current divides into two or more paths before recombining to complete the circuit


parallel interface: an interface between a computer and a printer where the computer sends multiple bits of information to the printer simultaneously


parallel port: an interface between a computer and a printer where the computer sends multiple bits of information to the printer simultaneously


paramagnet: magnet made of a substance whose magnetization is proportional to the strength of the magnetic field applied to it


parang: a stout straight knife used in Malaysia and Indonesia


parapet: fortification consisting of a low wall


breastwork: fortification consisting of a low wall


parapet: a low wall along the edge of a roof or balcony


parasail: parachute that will lift a person up into the air when it is towed by a motorboat or a car


parasol: a handheld collapsible source of shade


sunshade: a handheld collapsible source of shade


paregoric: medicine used to treat diarrhea


camphorated tincture of opium: medicine used to treat diarrhea


parer: a small sharp knife used in paring fruits or vegetables


paring knife: a small sharp knife used in paring fruits or vegetables


parfait glass: a tall slender glass with a short stem in which parfait is served


pargeting: ornamental plasterwork


pargetting: ornamental plasterwork


pargetry: ornamental plasterwork


pari-mutuel machine: computer that registers bets and divides the total amount bet among those who won


totalizer: computer that registers bets and divides the total amount bet among those who won


totaliser: computer that registers bets and divides the total amount bet among those who won


totalizator: computer that registers bets and divides the total amount bet among those who won


totalisator: computer that registers bets and divides the total amount bet among those who won


Paris University: a university in Paris; intellectual center of France


University of Paris: a university in Paris; intellectual center of France


Sorbonne: a university in Paris; intellectual center of France


park: a gear position that acts as a parking brake


parka: a kind of heavy jacket (`windcheater' is a British term)


windbreaker: a kind of heavy jacket (`windcheater' is a British term)


windcheater: a kind of heavy jacket (`windcheater' is a British term)


anorak: a kind of heavy jacket (`windcheater' is a British term)


park bench: a bench in a public park


parking meter: a coin-operated timer located next to a parking space; depositing money into it entitles you to park your car there for a specified length of time


parlor: reception room in an inn or club where visitors can be received


parlour: reception room in an inn or club where visitors can be received


parlor car: a passenger car for day travel; you pay extra fare for individual chairs


parlour car: a passenger car for day travel; you pay extra fare for individual chairs


drawing-room car: a passenger car for day travel; you pay extra fare for individual chairs


palace car: a passenger car for day travel; you pay extra fare for individual chairs


chair car: a passenger car for day travel; you pay extra fare for individual chairs


paroxetime: a selective-serotonin reuptake inhibitor commonly prescribed as an antidepressant (trade name Paxil)


Paxil: a selective-serotonin reuptake inhibitor commonly prescribed as an antidepressant (trade name Paxil)


parquet: seating on the main floor between the orchestra and the parquet circle


parquet: a floor made of parquetry


parquet floor: a floor made of parquetry


parquet circle: seating at the rear of the main floor (beneath the balconies)


parterre: seating at the rear of the main floor (beneath the balconies)


parquetry: a patterned wood inlay used to cover a floor


parqueterie: a patterned wood inlay used to cover a floor


parsonage: an official residence provided by a church for its parson or vicar or rector


vicarage: an official residence provided by a church for its parson or vicar or rector


rectory: an official residence provided by a church for its parson or vicar or rector


Parsons table: a sturdy rectangular table with block legs at the four corners; the top and the legs are the same width


part: something less than the whole of a human artifact


portion: something less than the whole of a human artifact


parterre: an ornamental flower garden; beds and paths are arranged to form a pattern


Parthenon: the main temple of the goddess Athena; built on the acropolis in Athens more than 400 years B.C.; example of Doric architecture


partial denture: a denture replacing one or more teeth in a dental arch


particle detector: a chamber in which particles can be made visible


partisan: a pike with a long tapering double-edged blade with lateral projections; 16th and 17th centuries


partizan: a pike with a long tapering double-edged blade with lateral projections; 16th and 17th centuries


partition: a vertical structure that divides or separates (as a wall divides one room from another)


divider: a vertical structure that divides or separates (as a wall divides one room from another)


parts bin: a bin for holding spare parts


party favor: souvenir consisting of a small gift given to a guest at a party


party favour: souvenir consisting of a small gift given to a guest at a party


favor: souvenir consisting of a small gift given to a guest at a party


favour: souvenir consisting of a small gift given to a guest at a party


party line: a telephone line serving two or more subscribers


party wall: a wall erected on the line between two properties and shared by both owners


parvis: a courtyard or portico in front of a building (especially a cathedral)


passage: a way through or along which someone or something may pass


passageway: a passage between rooms or between buildings


passenger car: a railcar where passengers ride


coach: a railcar where passengers ride


carriage: a railcar where passengers ride


passenger ship: a ship built to carry passengers


passenger train: a train that carries passengers


passenger van: a van that carries passengers


passe-partout: a mounting for a picture using gummed tape


passive matrix display: a type of LCD display used for some portable computers; parallel wires run both vertically and horizontally and pixels are turned on when the wires intersecting at that pixel are both energized


passkey: key that secures entrance everywhere


passe-partout: key that secures entrance everywhere


master key: key that secures entrance everywhere


master: key that secures entrance everywhere


pass-through: an opening that resembles a window between two rooms (especially a shelved opening between a kitchen and dining room that is used to pass dishes)


paste-up: a composition of flat objects pasted on a board or other backing


pastiche: a work of art that imitates the style of some previous work


pastry cart: a serving cart for displaying pastry desserts to restaurant patrons


pasty: (usually used in the plural) one of a pair of adhesive patches worn to cover the nipples of exotic dancers and striptease performers


patch: a piece of cloth used as decoration or to mend or cover a hole


patchcord: a length of wire that has a plug at each end; used to make connections at a patchboard


patchouli: a heavy perfume made from the patchouli plant


patchouly: a heavy perfume made from the patchouli plant


pachouli: a heavy perfume made from the patchouli plant


patch pocket: a flat pocket sewn to the outside of a garment


patchwork: sewing consisting of pieces of different materials sewn together in a pattern


patchwork: a quilt made by sewing patches of different materials together


patchwork quilt: a quilt made by sewing patches of different materials together


patent log: a cigar-shaped log with rotary fins that measure the ship's speed


screw log: a cigar-shaped log with rotary fins that measure the ship's speed


taffrail log: a cigar-shaped log with rotary fins that measure the ship's speed


patent medicine: medicine that is protected by a patent and available without a doctor's prescription


paternoster: a type of lift having a chain of open compartments that move continually in an endless loop so that (agile) passengers can step on or off at each floor


path: a way especially designed for a particular use


pathway: a trodden path


footpath: a trodden path


patina: a fine coating of oxide on the surface of a metal


patio: usually paved outdoor area adjoining a residence


terrace: usually paved outdoor area adjoining a residence


patisserie: a bakery specializing in French pastry


patka: a scarf worn by Sikh men


patriarchal cross: a cross with two crossbars


patrol boat: a vessel assigned to patrol an area


patrol ship: a vessel assigned to patrol an area


patty-pan: a pan for cooking patties or pasties


pave: a setting with precious stones so closely set that no metal shows


paved surface: a level horizontal surface covered with paving material


pavement: the paved surface of a thoroughfare


paving: the paved surface of a thoroughfare


pavilion: large and often sumptuous tent


marquee: large and often sumptuous tent


paving stone: a stone used for paving


pavior: a machine for laying pavement


paviour: a machine for laying pavement


paving machine: a machine for laying pavement


pavis: (Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position


pavise: (Middle Ages) a large heavy oblong shield protecting the whole body; originally carried but sometimes set up in permanent position


pawl: a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward


detent: a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward


click: a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward


dog: a hinged catch that fits into a notch of a ratchet to move a wheel forward or prevent it from moving backward


pawn: (chess) the least powerful piece; moves only forward and captures only to the side; it can be promoted to a more powerful piece if it reaches the 8th rank


pawnbroker's shop: a shop where loans are made with personal property as security


pawnshop: a shop where loans are made with personal property as security


loan office: a shop where loans are made with personal property as security


pay-phone: a coin-operated telephone


pay-station: a coin-operated telephone


PC board: a removable circuit board for a personal computer; fits into a slot in the mother board


peacekeeper: the pistol of a law officer in the old West


peach orchard: a grove of peach trees


peacock-throne: the golden throne of former kings of Delhi; stolen by the Persians in 1739 and subsequently lost; symbol of the former Shah of Iran


pea jacket: a sailor's heavy woolen double-breasted jacket


peacoat: a sailor's heavy woolen double-breasted jacket


pearl fishery: a fishery where they fish for pearl oysters


pea shooter: a straight narrow tube through which pellets (as dried peas) can be blown at a target


peavey: a stout lever with a sharp spike; used for handling logs


peavy: a stout lever with a sharp spike; used for handling logs


cant dog: a stout lever with a sharp spike; used for handling logs


dog hook: a stout lever with a sharp spike; used for handling logs


pectoral: an adornment worn on the chest or breast


pectoral medallion: an adornment worn on the chest or breast


pedal: a lever that is operated with the foot


treadle: a lever that is operated with the foot


foot pedal: a lever that is operated with the foot


foot lever: a lever that is operated with the foot


pedal pusher: snug trousers ending at the calves; worn by women and girls


toreador pants: snug trousers ending at the calves; worn by women and girls


pedestal: an architectural support or base (as for a column or statue)


plinth: an architectural support or base (as for a column or statue)


footstall: an architectural support or base (as for a column or statue)


pedestal table: a table supported by a single central column


pedestrian crossing: street crossing where pedestrians have right of way; often marked in some way (especially with diagonal stripes)


zebra crossing: street crossing where pedestrians have right of way; often marked in some way (especially with diagonal stripes)


pedicab: a tricycle (usually propelled by pedalling); used in the Orient for transporting passengers for hire


cycle rickshaw: a tricycle (usually propelled by pedalling); used in the Orient for transporting passengers for hire


pediment: a triangular gable between a horizontal entablature and a sloping roof


pedometer: measuring instrument for recording the number of steps taken in walking


peeler: a device for peeling vegetables or fruits


peen: the part of a hammerhead opposite the flat striking surface (may have various shapes)


peephole: a hole (in a door or an oven etc) through which you can peep


spyhole: a hole (in a door or an oven etc) through which you can peep


eyehole: a hole (in a door or an oven etc) through which you can peep


peep sight: rear gunsight having an adjustable eyepiece with a small aperture through which the front sight and the target are aligned


peg: a wooden pin pushed or driven into a surface


nog: a wooden pin pushed or driven into a surface


peg: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


pin: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


thole: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


tholepin: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


rowlock: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


oarlock: a holder attached to the gunwale of a boat that holds the oar in place and acts as a fulcrum for rowing


peg: regulator that can be turned to regulate the pitch of the strings of a stringed instrument


peg: a prosthesis that replaces a missing leg


wooden leg: a prosthesis that replaces a missing leg


leg: a prosthesis that replaces a missing leg


pegleg: a prosthesis that replaces a missing leg


pegboard: a board perforated with regularly spaced holes into which pegs can be fitted


peg top: a pear-shaped top made of wood with a metal center pin


Pelham: a bit with a bar mouthpiece that is designed to combine a curb and snaffle


pelican crossing: an acronym for pedestrian light control; a pedestrian crossing with traffic lights that are controlled by pedestrians


pelisse: a sleeveless cape that is lined or trimmed with fur


pelvimeter: measuring instrument for performing pelvimetry


pen: a writing implement with a point from which ink flows


pen: an enclosure for confining livestock


penal colony: a penal institution where prisoners are exiled (often located on an island from which escape is difficult or impossible)


penal institution: an institution where persons are confined for punishment and to protect the public


penal facility: an institution where persons are confined for punishment and to protect the public


penalty box: (ice hockey) an enclosed bench to the side of an ice-hockey rink for players who are serving time penalties


pen-and-ink: a drawing executed with pen and ink


pencil: a thin cylindrical pointed writing implement; a rod of marking substance encased in wood


pencil: a cosmetic in a long thin stick; designed to be applied to a particular part of the face


pencil box: a box for holding pencils


pencil case: a box for holding pencils


pencil sharpener: a rotary implement for sharpening the point on pencils


pendant: an adornment that hangs from a piece of jewelry (necklace or earring)


pendent: an adornment that hangs from a piece of jewelry (necklace or earring)


pendant earring: an earring with a pendant ornament


drop earring: an earring with a pendant ornament


eardrop: an earring with a pendant ornament


pendulum: an apparatus consisting of an object mounted so that it swings freely under the influence of gravity


pendulum clock: a clock regulated by a pendulum


pendulum watch: (18th century) a watch with a balance wheel having a fake pendulum attached to it


penetration bomb: a bomb with about 30% explosive and a casing designed to penetrate hardened targets before the explosive detonates


penicillamine: a drug (trade name Cuprimine) used to treat heavy metal poisoning and Wilson's disease and severe arthritis


Cuprimine: a drug (trade name Cuprimine) used to treat heavy metal poisoning and Wilson's disease and severe arthritis


penicillin: any of various antibiotics obtained from Penicillium molds (or produced synthetically) and used in the treatment of various infections and diseases


penicillinase-resistant antibiotic: a form of penicillin that is not rendered inactive by penicillinase


penicillin F: the first form of penicillin that was isolated in Great Britain


penicillin G: the penicillin that constitutes the principal component of many commercial antibiotics


benzylpenicillin: the penicillin that constitutes the principal component of many commercial antibiotics


penicillin O: a penicillin that is similar in antibiotic action to penicillin G but is obtained differently


penicillin V: a crystalline penicillin similar in action to penicillin G but more resistant to the action of gastric acids


phenoxymethyl penicillin: a crystalline penicillin similar in action to penicillin G but more resistant to the action of gastric acids


penicillin V potassium: a form of penicillin V (trade name Ledercillin VK)


Ledercillin VK: a form of penicillin V (trade name Ledercillin VK)


penile implant: an implant that creates an artificial erection


penitentiary: a correctional institution for those convicted of major crimes


pen: a correctional institution for those convicted of major crimes


penknife: a small pocketknife; originally used to cut quill pens


penlight: a small flashlight resembling a fountain pen


pennant: a long flag; often tapering


pennon: a long flag; often tapering


streamer: a long flag; often tapering


waft: a long flag; often tapering


pennoncel: a small pennant borne on a lance


penoncel: a small pennant borne on a lance


pennoncelle: a small pennant borne on a lance


penny arcade: an arcade with coin-operated devices for entertainment


pennywhistle: an inexpensive fipple flute


tin whistle: an inexpensive fipple flute


whistle: an inexpensive fipple flute


pentaerythritol: a coronary vasodilator (trade name Peritrate) used to treat angina pectoris


Peritrate: a coronary vasodilator (trade name Peritrate) used to treat angina pectoris


Pentagon: a government building with five sides that serves as the headquarters of the United States Department of Defense


pentazocine: analgesic drug (trade name Talwin) that is less addictive than morphine


Talwin: analgesic drug (trade name Talwin) that is less addictive than morphine


penthouse: an apartment located on the top floors of a building


pentimento: the reappearance in a painting of an underlying image that had been painted over (usually when the later painting becomes transparent with age)


pentobarbital sodium: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic


pentobarbital: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic


Nembutal: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic


yellow jacket: a barbiturate (trade name Nembutal) used as a sedative and hypnotic and antispasmodic


pentode: a thermionic tube having five electrodes


pentoxifylline: a drug (trade name Trental) used to treat claudication; believed to increase the flexibility of red blood cells so they can flow through the blood vessels to the legs and feet


Trental: a drug (trade name Trental) used to treat claudication; believed to increase the flexibility of red blood cells so they can flow through the blood vessels to the legs and feet


pentylenetetrazol: a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark


pentamethylenetetrazol: a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark


Metrazol: a drug used as a circulatory and respiratory stimulant; larger doses cause convulsions in shock therapy; Metrazol is a trademark


peplos: a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist


peplus: a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist


peplum: a garment worn by women in ancient Greece; cloth caught at the shoulders and draped in folds to the waist


peplum: a flared ruffle attached to the waistline of a dress or jacket or blouse


pepper-and-salt: a fabric woven with flecks of light and dark


pepper mill: a mill for grinding pepper


pepper grinder: a mill for grinding pepper


pepper shaker: a shaker with a perforated top for sprinkling ground pepper


pepper box: a shaker with a perforated top for sprinkling ground pepper


pepper pot: a shaker with a perforated top for sprinkling ground pepper


pepper spray: a nonlethal aerosol spray made with the pepper derivative oleoresin capiscum; used to cause temporary blindness and incapacitate an attacker; also used as a bear deterrent


percale: a fine closely woven cotton fabric


perch: support consisting of a branch or rod that serves as a resting place (especially for a bird)


percolator: a coffeepot in which boiling water ascends through a central tube and filters back down through a basket of ground coffee beans


percussion cap: a detonator that explodes when struck


percussion instrument: a musical instrument in which the sound is produced by one object striking another


percussive instrument: a musical instrument in which the sound is produced by one object striking another


perforation: a line of small holes for tearing at a particular place


perfume: a toiletry that emits and diffuses a fragrant odor


essence: a toiletry that emits and diffuses a fragrant odor


perfumery: an establishment where perfumes are made


perfumery: store where perfumes are sold


perfumery: perfumes in general


period piece: any work of art whose special value lies in its evocation of a historical period


peripheral: (computer science) electronic equipment connected by cable to the CPU of a computer


computer peripheral: (computer science) electronic equipment connected by cable to the CPU of a computer


peripheral device: (computer science) electronic equipment connected by cable to the CPU of a computer


periscope: an optical instrument that provides a view of an otherwise obstructed field


peristyle: a colonnade surrounding a building or enclosing a court


periwig: a wig for men that was fashionable in the 17th and 18th centuries


peruke: a wig for men that was fashionable in the 17th and 18th centuries


periwinkle plant derivative: an antineoplastic drug used to treat some forms of cancer


permanent magnet: a magnet that retains its magnetism after being removed from a magnetic field


static magnet: a magnet that retains its magnetism after being removed from a magnetic field


permanent press: a fabric that has been chemically processed to resist wrinkles and hold its shape


durable press: a fabric that has been chemically processed to resist wrinkles and hold its shape


perpendicular: an extremely steep face


perpetual motion machine: a machine that can continue to do work indefinitely without drawing energy from some external source; impossible under the law of conservation of energy


perphenazine: tranquilizer and antidepressant (trade name Triavil) sometimes used as an antiemetic for adults


Triavil: tranquilizer and antidepressant (trade name Triavil) sometimes used as an antiemetic for adults


personal computer: a small digital computer based on a microprocessor and designed to be used by one person at a time


PC: a small digital computer based on a microprocessor and designed to be used by one person at a time


microcomputer: a small digital computer based on a microprocessor and designed to be used by one person at a time


personal digital assistant: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


PDA: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


personal organizer: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


personal organiser: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


organizer: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


organiser: a lightweight consumer electronic device that looks like a hand-held computer but instead performs specific tasks; can serve as a diary or a personal database or a telephone or an alarm clock etc.


personnel carrier: a military vehicle (usually armored) for transporting military personnel and their equipment


pestle: a club-shaped hand tool for grinding and mixing substances in a mortar


pestle: a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone


muller: a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone


pounder: a heavy tool of stone or iron (usually with a flat base and a handle) that is used to grind and mix material (as grain or drugs or pigments) against a slab of stone


petard: an explosive device used to break down a gate or wall


petcock: regulator consisting of a small cock or faucet or valve for letting out air or releasing compression or draining


Peter Pan collar: a flat collar with rounded ends that meet in front


petit point: needlepoint done with small stitches


petit point: a small diagonal needlepoint stitch


tent stitch: a small diagonal needlepoint stitch


Petri dish: a shallow dish used to culture bacteria


petrolatum gauze: gauze saturated with petrolatum


Petronas Towers: twin skyscrapers built in Kuala Lumpur in 1997; 1482 feet high


pet shop: a shop where pet animals can be purchased


petticoat: undergarment worn under a skirt


half-slip: undergarment worn under a skirt


underskirt: undergarment worn under a skirt


pew: long bench with backs; used in church by the congregation


church bench: long bench with backs; used in church by the congregation


pharmaceutical: drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment


pharmaceutic: drug or medicine that is prepared or dispensed in pharmacies and used in medical treatment


pharmacopoeia: a collection or stock of drugs


phenazopyridine: analgesic (trade name Pyridium) used to treat urinary tract infections


Pyridium: analgesic (trade name Pyridium) used to treat urinary tract infections


phencyclidine: a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen


phencyclidine hydrochloride: a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen


PCP: a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen


angel dust: a drug used as an anesthetic by veterinarians; illicitly taken (originally in the form of powder or `dust') for its effects as a hallucinogen


phenelzine: monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression


Nardil: monoamine oxidase inhibitor (trade name Nardil) used to treat clinical depression


pheniramine: an antihistamine used in preparations to treat allergies and respiratory infections; used to treat rhinitis and skin rashes and pruritus


phenolphthalein: a laxative used in many preparations under various trade names; also used as an acid-base indicator in titrations involving weak acids and strong bases because it is brilliant red at high alkalinity and colorless below pH 8


phensuximide: anticonvulsant (trade name Milontin) used to treat petit mal


Milontin: anticonvulsant (trade name Milontin) used to treat petit mal


phentolamine: a virility drug (trade name Vasomax) to treat erectile dysfunction in men


Vasomax: a virility drug (trade name Vasomax) to treat erectile dysfunction in men


phenylbutazone: anti-inflammatory drug (trade name Butazolidin)


Butazolidin: anti-inflammatory drug (trade name Butazolidin)


phenylephrine: a powerful vasoconstrictor used to dilate the pupils and relieve nasal congestion


phenylpropanolamine: an adrenergic drug used in many preparations to relieve allergic reactions or respiratory infections


phenyltoloxamine: antihistamine included in some preparations used to treat coughing and nasal congestion


phial: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)


vial: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)


ampule: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)


ampul: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)


ampoule: a small bottle that contains a drug (especially a sealed sterile container for injection by needle)


Phillips screw: a screw with a special head having crossed slots


Phillips screwdriver: a screwdriver for use with Phillips screws


phonograph album: an album for holding phonograph records


record album: an album for holding phonograph records


phonograph needle: a stylus that formerly made sound by following a groove in a phonograph record


needle: a stylus that formerly made sound by following a groove in a phonograph record


phonograph record: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


phonograph recording: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


record: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


disk: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


disc: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


platter: sound recording consisting of a disk with a continuous groove; used to reproduce music by rotating while a phonograph needle tracks in the groove


photocathode: a cathode that emits electrons when illuminated


photocoagulator: surgical instrument containing a laser for use in photocoagulation


photocopier: a copier that uses photographic methods of making copies


photocopy: a photographic copy of written or printed or graphic work


photoelectric cell: a transducer used to detect and measure light and other radiations


photoconductive cell: a transducer used to detect and measure light and other radiations


photocell: a transducer used to detect and measure light and other radiations


electric eye: a transducer used to detect and measure light and other radiations


magic eye: a transducer used to detect and measure light and other radiations


photograph: a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material


photo: a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material


exposure: a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material


picture: a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material


pic: a representation of a person or scene in the form of a print or transparent slide; recorded by a camera on light-sensitive material


photograph album: an album for photographs


photographic equipment: equipment used by a photographer


photographic paper: light-sensitive paper on which photograph can be printed


photographic material: light-sensitive paper on which photograph can be printed


photographic print: a printed picture produced from a photographic negative


print: a printed picture produced from a photographic negative


photolithograph: a lithograph produced by photographically produced plates


photometer: measuring instrument for measuring the luminous intensity of a source by comparing it (visually or photoelectrically) with a standard source


photomicrograph: a photograph taken with the help of a microscope


photomontage: a montage that uses photographic images


Photostat: a duplicating machine that makes quick positive or negative copies directly on the surface of prepared paper


Photostat machine: a duplicating machine that makes quick positive or negative copies directly on the surface of prepared paper


photostat: a photocopy made on a Photostat machine


phrontistery: an establishment for study and learning (sometimes including modern universities)


physical pendulum: pendulum consisting of an actual object allowed to rotate freely around a horizontal axis


compound pendulum: pendulum consisting of an actual object allowed to rotate freely around a horizontal axis


physics lab: a laboratory for research in physics


physics laboratory: a laboratory for research in physics


piano: a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds


pianoforte: a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds


forte-piano: a keyboard instrument that is played by depressing keys that cause hammers to strike tuned strings and produce sounds


piano action: action consisting of a system of levers that move a felt hammer to strike the strings when a key is depressed


piano keyboard: a bank of keys on a musical instrument


fingerboard: a bank of keys on a musical instrument


clavier: a bank of keys on a musical instrument


piano wire: thin steel wire of high tensile strength


piccolo: a small flute; pitched an octave above the standard flute


pick: a heavy iron tool with a wooden handle and a curved head that is pointed on both ends


pickax: a heavy iron tool with a wooden handle and a curved head that is pointed on both ends


pickaxe: a heavy iron tool with a wooden handle and a curved head that is pointed on both ends


pick: a thin sharp implement used for removing unwanted material


pick: a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument


plectrum: a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument


plectron: a small thin device (of metal or plastic or ivory) used to pluck a stringed instrument


pickelhaube: a spiked helmet worn by German soldiers


picket: a wooden strip forming part of a fence


pale: a wooden strip forming part of a fence


picket: a vehicle performing sentinel duty


picket boat: a boat serving as a picket


picket fence: a fence made of upright pickets