read/write memory: the most common computer memory which can be used by programs to perform necessary tasks while the computer is on; an integrated circuit memory chip allows information to be stored or accessed in any order and all storage locations are equally accessible


range: a place for shooting (firing or driving) projectiles of various kinds


rangefinder: a measuring instrument (acoustic or optical or electronic) for finding the distance of an object


range finder: a measuring instrument (acoustic or optical or electronic) for finding the distance of an object


range hood: exhaust hood over a kitchen range


range pole: surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors


ranging pole: surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors


flagpole: surveying instrument consisting of a straight rod painted in bands of alternate red and white each one foot wide; used for sightings by surveyors


ranitidine: a histamine blocker and antacid (trade name Zantac) used to treat peptic ulcers and gastritis and esophageal reflux


Zantac: a histamine blocker and antacid (trade name Zantac) used to treat peptic ulcers and gastritis and esophageal reflux


rapid transit: an urban public transit system using underground or elevated trains


mass rapid transit: an urban public transit system using underground or elevated trains


rapier: a straight sword with a narrow blade and two edges


tuck: a straight sword with a narrow blade and two edges


rappee: strong snuff made from dark coarse tobacco


rariora: (plural) rare collector's items


rasp: a coarse file with sharp pointed projections


wood file: a coarse file with sharp pointed projections


raster: the rectangular formation of parallel scanning lines that guide the electron beam on a television screen or a computer monitor


rat: a pad (usually made of hair) worn as part of a woman's coiffure


ratchet: mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction


rachet: mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction


ratch: mechanical device consisting of a toothed wheel or rack engaged with a pawl that permits it to move in only one direction


ratchet wheel: toothed wheel held in place by a pawl or detent and turned by a lever


rathole: a small dirty uncomfortable room


rathskeller: a tavern below street level featuring beer; originally a German restaurant in the basement of city hall


ratline: (nautical) a small horizontal rope between the shrouds of a sailing ship; they form a ladder for climbing aloft


ratlin: (nautical) a small horizontal rope between the shrouds of a sailing ship; they form a ladder for climbing aloft


rat-tail file: a thin round file shaped like the tail of a rat


rattan: a switch made from the stems of the rattan palms


ratan: a switch made from the stems of the rattan palms


rattle: a baby's toy that makes percussive noises when shaken


rattrap: a trap for catching rats


rattrap: filthy run-down dilapidated housing


ravehook: a hooked hand tool used to prepare the seams of a boat for oakum


Rayleigh disk: an acoustic radiometer consisting of a light disk suspended from a quartz thread; when exposed to a progressive sound wave its torque can measure velocity


rayon: a synthetic silklike fabric


razor: edge tool used in shaving


razorblade: a blade that has very sharp edge


razor edge: an edge that is as sharp as the cutting side of a razor


reaction-propulsion engine: a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream


reaction engine: a jet or rocket engine based on a form of aerodynamic propulsion in which the vehicle emits a high-speed stream


reaction turbine: a turbine with blades arranged to develop torque from gradual decrease of steam pressure from inlet to exhaust


reactor: an electrical device used to introduce reactance into a circuit


reading lamp: a lamp that provides light for reading


reading room: a room set aside for reading


read-only memory: (computer science) memory whose contents can be accessed and read but cannot be changed


ROM: (computer science) memory whose contents can be accessed and read but cannot be changed


read-only storage: (computer science) memory whose contents can be accessed and read but cannot be changed


fixed storage: (computer science) memory whose contents can be accessed and read but cannot be changed


read-only memory chip: a memory chip providing read-only memory


readout: an electronic device the displays information is a visual form


read-out: an electronic device the displays information is a visual form


read/write head: (computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a disk


head: (computer science) a tiny electromagnetic coil and metal pole used to write and read magnetic patterns on a disk


ready-made: a manufactured artifact (as a garment or piece of furniture) that is made in advance and available for purchase


ready-to-wear: ready-made clothing


real storage: the main memory in a virtual memory system


reamer: a drill that is used to shape or enlarge holes


reamer: a squeezer with a conical ridged center that is used for squeezing juice from citrus fruit


juicer: a squeezer with a conical ridged center that is used for squeezing juice from citrus fruit


juice reamer: a squeezer with a conical ridged center that is used for squeezing juice from citrus fruit


rear: the side that goes last or is not normally seen


back: the side that goes last or is not normally seen


rearview mirror: car mirror that reflects the view out of the rear window


rear window: car window that allows vision out of the back of the car


Reaumur thermometer: an alcohol thermometer calibrated in degrees Reaumur


reboxetine: an antidepressant drug that blocks the reuptake of norepinephrine


Edronax: an antidepressant drug that blocks the reuptake of norepinephrine


rebozo: a long woolen or linen scarf covering the head and shoulders (also used as a sling for holding a baby); traditionally worn by Latin-American women


receiver: set that receives radio or tv signals


receiving system: set that receives radio or tv signals


receptacle: a container that is used to put or keep things in


receptacle: an electrical (or electronic) fitting that is connected to a source of power and equipped to receive an insert


reception desk: a counter (as in a hotel) where guests are received


reception room: a room for receiving and entertaining visitors (as in a private house or hotel)


recess: an enclosure that is set back or indented


niche: an enclosure that is set back or indented


reciprocating engine: an internal-combustion engine in which the crankshaft is turned by pistons moving up and down in cylinders


recliner: an armchair whose back can be lowered and foot can be raised to allow the sitter to recline in it


reclining chair: an armchair whose back can be lowered and foot can be raised to allow the sitter to recline in it


lounger: an armchair whose back can be lowered and foot can be raised to allow the sitter to recline in it


reconnaissance plane: a military airplane used to gain information about an enemy


reconnaissance vehicle: fast armored military vehicle with four-wheel drive and open top


scout car: fast armored military vehicle with four-wheel drive and open top


restoration: a model that represents the landscape of a former geological age or that represents and extinct animal etc.


record changer: an automatic mechanical device on a record player that causes new records to be played without manual intervention


auto-changer: an automatic mechanical device on a record player that causes new records to be played without manual intervention


changer: an automatic mechanical device on a record player that causes new records to be played without manual intervention


recorder: equipment for making records


recording equipment: equipment for making records


recording machine: equipment for making records


recording: a signal that encodes something (e.g., picture or sound) that has been recorded


recording: a storage device on which information (sounds or images) have been recorded


recording studio: studio where tapes and records are recorded


recording system: audio system for recoding sound


record jacket: the jacket for a phonograph record


record player: machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically


phonograph: machine in which rotating records cause a stylus to vibrate and the vibrations are amplified acoustically or electronically


record sleeve: a sleeve for storing a phonograph record


record cover: a sleeve for storing a phonograph record


recovery room: a hospital room for the care of patients immediately after surgery


recreational drug: a narcotic drug that is used only occasionally and is claimed to be nonaddictive


recreational facility: a public facility for recreation


recreation facility: a public facility for recreation


recreational vehicle: a motorized wheeled vehicle used for camping or other recreational activities


RV: a motorized wheeled vehicle used for camping or other recreational activities


R.V.: a motorized wheeled vehicle used for camping or other recreational activities


recreation room: a room equipped for informal entertaining


rec room: a room equipped for informal entertaining


rectifier: electrical device that transforms alternating into direct current


recycling bin: a bin for depositing things to be recycled


recycling plant: a plant for reprocessing used or abandoned materials


redbrick university: (British informal) a provincial British university of relatively recent founding; distinguished from Oxford University and Cambridge University


red carpet: a strip of red carpeting laid down for dignitaries to walk on


redoubt: an entrenched stronghold or refuge


redoubt: (military) a temporary or supplementary fortification; typically square or polygonal without flanking defenses


reducer: pipefitting that joins two pipes of different diameter


reduction gear: gearing that reduces an input speed to a slower output speed


reed: a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it


vibrating reed: a vibrator consisting of a thin strip of stiff material that vibrates to produce a tone when air streams over it


reed pipe: organ pipe with a vibrating reed


reed stop: an organ stop with the tone of a reed instrument


reef knot: a square knot used in a reef line


flat knot: a square knot used in a reef line


reel: winder consisting of a revolving spool with a handle; attached to a fishing rod


reel: a roll of photographic film holding a series of frames to be projected by a movie projector


refectory: a communal dining-hall (usually in a monastery)


refectory table: a long narrow dining table supported by a stretcher between two trestles


refill: a commercial product that refills a container with its appropriate contents


refill: a prescription drug that is provided again


refinery: an industrial plant for purifying a crude substance


reflecting telescope: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece


reflector: optical telescope consisting of a large concave mirror that produces an image that is magnified by the eyepiece


reflection: the image of something as reflected by a mirror (or other reflective material)


reflexion: the image of something as reflected by a mirror (or other reflective material)


reflectometer: a meter that measures the reflectance of a surface


reflector: device that reflects radiation


reflex camera: camera that allows the photographer to view and focus the exact scene being photographed


reflux condenser: condenser such that vapor over a boiling liquid is condensed and flows back into the vessel to prevent its contents from boiling dry


reformatory: correctional institution for the detention and discipline and training of young or first offenders


reform school: correctional institution for the detention and discipline and training of young or first offenders


training school: correctional institution for the detention and discipline and training of young or first offenders


reformer: an apparatus that reforms the molecular structure of hydrocarbons to produce richer fuel


refracting telescope: optical telescope that has a large convex lens that produces an image that is viewed through the eyepiece


refractometer: measuring instrument for measuring the refractive index of a substance


refrigeration system: a cooling system for chilling or freezing (usually for preservative purposes)


refrigerator: white goods in which food can be stored at low temperatures


icebox: white goods in which food can be stored at low temperatures


refrigerator car: a freight car that is equipped with refrigeration system


refuge: a shelter from danger or hardship


sanctuary: a shelter from danger or hardship


asylum: a shelter from danger or hardship


regalia: paraphernalia indicative of royalty (or other high office)


regimentals: the military uniform and insignia of a regiment


register: a regulator (as a sliding plate) for regulating the flow of air into a furnace or other heating device


register: an air passage (usually in the floor or a wall of a room) for admitting or excluding heated air from the room


register: (computer science) memory device that is the part of computer memory that has a specific address and that is used to hold information of a specific kind


regulator: any of various controls or devices for regulating or controlling fluid flow, pressure, temperature, etc.


rein: one of a pair of long straps (usually connected to the bit or the headpiece) used to control a horse


relaxant: a drug that relaxes and relieves tension


relay: electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit


electrical relay: electrical device such that current flowing through it in one circuit can switch on and off a current in a second circuit


release: merchandise issued for sale or public showing (especially a record or film)


release: a device that when pressed will release part of a mechanism


button: a device that when pressed will release part of a mechanism


relic: an antiquity that has survived from the distant past


relief: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background


relievo: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background


rilievo: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background


embossment: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background


sculptural relief: sculpture consisting of shapes carved on a surface so as to stand out from the surrounding background


religious residence: residence that is a place of religious seclusion (such as a monastery)


cloister: residence that is a place of religious seclusion (such as a monastery)


reliquary: a container where religious relics are stored or displayed (especially relics of saints)


remake: creation that is created again or anew


remaking: creation that is created again or anew


remedy: a medicine or therapy that cures disease or relieve pain


curative: a medicine or therapy that cures disease or relieve pain


cure: a medicine or therapy that cures disease or relieve pain


therapeutic: a medicine or therapy that cures disease or relieve pain


remise: an expensive or high-class hackney


remote control: a device that can be used to control a machine or apparatus from a distance


remote: a device that can be used to control a machine or apparatus from a distance


remote-control bomb: a bomb that can be detonated by remote control


remote terminal: a terminal connected to a computer by a data link


link-attached terminal: a terminal connected to a computer by a data link


remote station: a terminal connected to a computer by a data link


link-attached station: a terminal connected to a computer by a data link


removable disk: a hard disk that can be removed from the disk drive; removal prevents unauthorized use


rendering: perspective drawing of an architect's design


rendering: a coat of stucco applied to a masonry wall


rep: a fabric with prominent rounded crosswise ribs


repp: a fabric with prominent rounded crosswise ribs


repair shop: a shop specializing in repairs and maintenance


fix-it shop: a shop specializing in repairs and maintenance


repeater: (electronics) electronic device that amplifies a signal before transmitting it again


repeating firearm: a firearm that can fire several rounds without reloading


repeater: a firearm that can fire several rounds without reloading


repertory: a storehouse where a stock of things is kept


replica: copy that is not the original; something that has been copied


replication: copy that is not the original; something that has been copied


reproduction: copy that is not the original; something that has been copied


repository: a burial vault (usually for some famous person)


monument: a burial vault (usually for some famous person)


representation: a creation that is a visual or tangible rendering of someone or something


reproducer: an audio system that can reproduce and amplify signals to produce sound


rerebrace: cannon that provides plate armor for the upper arm


upper cannon: cannon that provides plate armor for the upper arm


rescue equipment: equipment used to rescue passengers in case of emergency


research center: a center where research is done


research facility: a center where research is done


reseau: a network of fine lines used by astronomers as a reference for measurements on star photographs


reseau: a net or mesh foundation for lace


reserpine: antihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)


Raudixin: antihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)


Rau-Sed: antihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)


Sandril: antihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)


Serpasil: antihypertensive consisting of an alkaloid extracted from the plant Rauwolfia serpentina (trade names Raudixin or Rau-Sed or Sandril or Serpasil)


reservoir: tank used for collecting and storing a liquid (as water or oil)


reservoir: lake used to store water for community use


artificial lake: lake used to store water for community use


man-made lake: lake used to store water for community use


reset: device for resetting instruments or controls


reset button: a push button that you press to activate the reset mechanism


residence: the official house or establishment of an important person (as a sovereign or president)


resistance pyrometer: pyrometer that measures high temperatures by the resistance in a heated wire


resistance thermometer: thermometer that measures temperature by changes in the resistance of a spiral of platinum wire


platinum thermometer: thermometer that measures temperature by changes in the resistance of a spiral of platinum wire


resistor: an electrical device that resists the flow of electrical current


resistance: an electrical device that resists the flow of electrical current


resonator: any system that resonates


resonator: an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude


resonant circuit: an electrical circuit that combines capacitance and inductance in such a way that a periodic electric oscillation will reach maximum amplitude


resonator: a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves


cavity resonator: a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves


resonating chamber: a hollow chamber whose dimensions allow the resonant oscillation of electromagnetic or acoustic waves


resort hotel: a fashionable hotel usually in a resort area


spa: a fashionable hotel usually in a resort area


respirator: a breathing device for administering long-term artificial respiration


inhalator: a breathing device for administering long-term artificial respiration


rest: a support on which things can be put


restaurant: a building where people go to eat


eating house: a building where people go to eat


eating place: a building where people go to eat


eatery: a building where people go to eat


rest house: a building used for shelter by travelers (especially in areas where there are no hotels)


restraint: a device that retards something's motion


constraint: a device that retards something's motion


resuscitator: a breathing apparatus used for resuscitation by forcing oxygen into the lungs of a person who has undergone asphyxia or arrest of respiration


retainer: a dental appliance that holds teeth (or a prosthesis) in position after orthodontic treatment


retaining wall: a wall that is built to resist lateral pressure (especially a wall built to prevent the advance of a mass of earth)


reticle: a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument


reticule: a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument


graticule: a network of fine lines, dots, cross hairs, or wires in the focal plane of the eyepiece of an optical instrument


reticulation: an arrangement resembling a net or network


reticule: a woman's drawstring handbag; usually made of net or beading or brocade; used in 18th and 19th centuries


restoration: some artifact that has been restored or reconstructed


retort: a vessel where substances are distilled or decomposed by heat


retractor: surgical instrument that holds back the edges of a surgical incision


retread: a used automobile tire that has been remolded to give it new treads


recap: a used automobile tire that has been remolded to give it new treads


retrenchment: entrenchment consisting of an additional interior fortification to prolong the defense


retrofit: a component or accessory added to something after it has been manufactured


retrorocket: a small rocket engine on a larger rocket or spacecraft that is fired to slow or alter its course


return key: the key on electric typewriters or computer keyboards that causes a carriage return and a line feed


return: the key on electric typewriters or computer keyboards that causes a carriage return and a line feed


reverberatory furnace: a furnace in which the material that is being treated is heated indirectly by flames that are directed at the roof and walls of the furnace


revers: a lapel on a woman's garment; turned back to show the reverse side


revere: a lapel on a woman's garment; turned back to show the reverse side


reverse: the gears by which the motion of a machine can be reversed


reverse gear: the gears by which the motion of a machine can be reversed


reverse: the side of a coin or medal that does not bear the principal design


verso: the side of a coin or medal that does not bear the principal design


reverse transcriptase inhibitor: an antiviral drug that inhibits the action of reverse transcriptase in retroviruses such as HIV


reversible: a garment (especially a coat) that can be worn inside out (with either side of the cloth showing)


reversing thermometer: a thermometer that registers the temperature in deep waters


revetment: a facing (usually masonry) that supports an embankment


revetement: a facing (usually masonry) that supports an embankment


stone facing: a facing (usually masonry) that supports an embankment


revetment: a barrier against explosives


reviewing stand: a stand from which a parade or military force can be reviewed


revolver: a pistol with a revolving cylinder (usually having six chambers for bullets)


six-gun: a pistol with a revolving cylinder (usually having six chambers for bullets)


six-shooter: a pistol with a revolving cylinder (usually having six chambers for bullets)


revolving door: a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings


revolver: a door consisting of four orthogonal partitions that rotate about a central pivot; a door designed to equalize the air pressure in tall buildings


rheometer: an instrument for measuring the flow of liquids (especially arterial blood)


rheostat: resistor for regulating current


variable resistor: resistor for regulating current


rhinoscope: medical instrument consisting of a mirror mounted at an angle on a rod; used to examine the nasal passages (through the nasopharynx)


rib: support resembling the rib of an animal


rib: a projecting molding on the underside of a vault or ceiling; may be ornamental or structural


riband: a ribbon used as a decoration


ribband: a ribbon used as a decoration


ribavirin: an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections


Virazole: an inhaled antiviral agent (trade name Virazole) that may be used to treat serious virus infections


ribbed vault: vault that resembles a groined vault but has ribbed arches


ribbing: a framework of ribs


ribbon: notion consisting of a narrow strip of fine material used for trimming


ribbon: a long strip of inked material for making characters on paper with a typewriter


typewriter ribbon: a long strip of inked material for making characters on paper with a typewriter


ribbon development: building complex in a continuous row along a road


rib joint pliers: a type of pliers


ricer: a kitchen utensil used for ricing soft foods by extruding them through small holes


rickrack: a narrow zigzag ribbon used as trimming


ricrac: a narrow zigzag ribbon used as trimming


riddle: a coarse sieve (as for gravel)


ride: a mechanical device that you ride for amusement or excitement


rider plate: a horizontal beam (or plate) connected to the top of a ship's vertical keel or to the keelson


ridge: a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters


ridgepole: a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters


rooftree: a beam laid along the edge where two sloping sides of a roof meet at the top; provides an attachment for the upper ends of rafters


ridge rope: either of a pair of lifelines running alongside the bowsprit of a ship


riding bitt: one of the large bitts used to secure the cable of a dropped anchor


riding boot: a boot without laces that is worn for riding horses; part of a riding habit


riding crop: a short whip with a thong at the end and a handle for opening gates


hunting crop: a short whip with a thong at the end and a handle for opening gates


riding mower: a power mower you can ride on


rifampin: an antibacterial drug (trade names Rifadin and Rimactane) used to treat tuberculosis


Rifadin: an antibacterial drug (trade names Rifadin and Rimactane) used to treat tuberculosis


Rimactane: an antibacterial drug (trade names Rifadin and Rimactane) used to treat tuberculosis


rifle: a shoulder firearm with a long barrel and a rifled bore


rifle ball: a bullet designed to be fired from a rifle; no longer made spherical in shape


rifle butt: the butt end of a rifle


rifle grenade: a grenade that is thrown from a launching device attached to the barrel of a rifle


rifle range: a range where people can practice shooting rifles


rig: gear (including necessary machinery) for a particular enterprise


rig: formation of masts, spars, sails, etc., on a vessel


rigging: formation of masts, spars, sails, etc., on a vessel


rigger: a long slender pointed sable brush used by artists


rigger brush: a long slender pointed sable brush used by artists


rigger: a sailing vessel with a specified rig


rigging: gear consisting of ropes etc. supporting a ship's masts and sails


tackle: gear consisting of ropes etc. supporting a ship's masts and sails


right field: the piece of ground in the outfield on the catcher's right


rightfield: the piece of ground in the outfield on the catcher's right


right: the piece of ground in the outfield on the catcher's right


right of way: the passage consisting of a path or strip of land over which someone has the legal right to pass


rigout: a person's costume (especially if bizarre)


rim: the outer part of a wheel to which the tire is attached


rim: (basketball) the hoop from which the net is suspended


ring: jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger


band: jewelry consisting of a circlet of precious metal (often set with jewels) worn on the finger


ring: a platform usually marked off by ropes in which contestants box or wrestle


ringlet: a small ring


rings: gymnastic apparatus consisting of a pair of heavy metal circles (usually covered with leather) suspended by ropes; used for gymnastic exercises


ringside: first row of seating; has an unobstructed view of a boxing or wrestling ring


ringside seat: first row of seating; has an unobstructed view of a boxing or wrestling ring


rink: building that contains a surface for ice skating or roller skating


skating rink: building that contains a surface for ice skating or roller skating


riot gun: a firearm designed to disperse rioters rather than to inflict serious injury or death


ripcord: a cord that is pulled to open a parachute from its pack during a descent


ripcord: a cord that is pulled to open the gasbag of a balloon wide enough to release gas and so causes the balloon to descend


ripping bar: a steel lever with one end formed into a ripping chisel and the other a gooseneck with a claw for pulling nails


ripping chisel: a long chisel with a slightly bent cutting end; used for heavy prying or cleaning mortises


ripsaw: a handsaw for cutting with the grain of the wood


splitsaw: a handsaw for cutting with the grain of the wood


riser: structural member consisting of the vertical part of a stair or step


riser: a vertical pipe in a building


riser pipe: a vertical pipe in a building


riser pipeline: a vertical pipe in a building


riser main: a vertical pipe in a building


ritonavir: a protease inhibitor (trade name Norvir) used in treating HIV


Norvir: a protease inhibitor (trade name Norvir) used in treating HIV


Ritz: an ostentatiously elegant hotel


river boat: a boat used on rivers or to ply a river


rivet: heavy pin having a head at one end and the other end being hammered flat after being passed through holes in the pieces that are fastened together


riveting machine: a machine for driving rivets


riveter: a machine for driving rivets


rivetter: a machine for driving rivets


rivet line: a line of rivets at a seam


roach: the butt of a marijuana cigarette


roach clip: metal tweezers used by marijuana smokers to hold a roach


roach holder: metal tweezers used by marijuana smokers to hold a roach


road: an open way (generally public) for travel or transportation


route: an open way (generally public) for travel or transportation


roadbed: a bed supporting a road


roadblock: a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.


barricade: a barrier set up by police to stop traffic on a street or road in order to catch a fugitive or inspect traffic etc.


roadhouse: an inn (usually outside city limits on a main road) providing meals and liquor and dancing and (sometimes) gambling


road map: a map showing roads (for automobile travel)


roadster: an open automobile having a front seat and a rumble seat


runabout: an open automobile having a front seat and a rumble seat


two-seater: an open automobile having a front seat and a rumble seat


road surface: the paved surface of a paved roadway


roadway: a road (especially that part of a road) over which vehicles travel


roaster: a special cooking pan for roasting


robe: any loose flowing garment


Robitussin: trade name of an expectorant that loosens phlegm and makes it easier to cough up


robotics equipment: equipment used in robotics


Rochon prism: optical device that produces plane-polarized ultraviolet light


Wollaston prism: optical device that produces plane-polarized ultraviolet light


rock bit: a drill bit that has hardened rotating rollers


roller bit: a drill bit that has hardened rotating rollers


rocker: a curved support that permits the supported object to rock to and fro


rocker: an ice skate with a curved blade


rocker: a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold


cradle: a trough that can be rocked back and forth; used by gold miners to shake auriferous earth in water in order to separate the gold


rocker arm: a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine


valve rocker: a lever pivoted at the center; used especially to push a valve down in an internal-combustion engine


rocket: a jet engine containing its own propellant and driven by reaction propulsion


rocket engine: a jet engine containing its own propellant and driven by reaction propulsion


rocket: any vehicle self-propelled by a rocket engine


projectile: any vehicle self-propelled by a rocket engine


rocket base: a military base for rocket missiles


rocket range: a firing range for rocket missiles


rock garden: a garden featuring rocks; usually alpine plants


rockery: a garden featuring rocks; usually alpine plants


rocking chair: a chair mounted on rockers


rocker: a chair mounted on rockers


rod: a long thin implement made of metal or wood


rodeo: an enclosure for cattle that have been rounded up


roentgenogram: a radiogram made by exposing photographic film to X rays; used in medical diagnosis


X ray: a radiogram made by exposing photographic film to X rays; used in medical diagnosis


X-ray: a radiogram made by exposing photographic film to X rays; used in medical diagnosis


X-ray picture: a radiogram made by exposing photographic film to X rays; used in medical diagnosis


X-ray photograph: a radiogram made by exposing photographic film to X rays; used in medical diagnosis


rofecoxib: a Cox-2 inhibitor (trade name Vioxx) that relieves pain and inflammation without harming the digestive tract; voluntarily withdrawn from the market in 2004


Vioxx: a Cox-2 inhibitor (trade name Vioxx) that relieves pain and inflammation without harming the digestive tract; voluntarily withdrawn from the market in 2004


roll: anything rolled up in cylindrical form


roll: photographic film rolled up inside a container to protect it from light


roller: a cylinder that revolves


roller: a small wheel without spokes (as on a roller skate)


roller bandage: bandage consisting of a strip of sterile fabric (of variable width) rolled into a cylinder to facilitate application


in-line skate: a shoe with a line of rollers fixed to the sole


Rollerblade: (trademark) an in-line skate


roller blind: a window shade that rolls up out of the way


roller coaster: elevated railway in an amusement park (usually with sharp curves and steep inclines)


big dipper: elevated railway in an amusement park (usually with sharp curves and steep inclines)


chute-the-chute: elevated railway in an amusement park (usually with sharp curves and steep inclines)


roller skate: a shoe with pairs of rollers fixed to the sole


roller towel: a towel with the ends sewn together, hung on a roller


roll film: photographic film wound on a spool


rolling hitch: a hitch for fastening a line to a spar or another rope


rolling mill: steel mill where metal is rolled into sheets and bars


rolling pin: utensil consisting of a cylinder (usually of wood) with a handle at each end; used to roll out dough


rolling stock: collection of wheeled vehicles owned by a railroad or motor carrier


roll of tobacco: tobacco leaves that have been made into a cylinder


smoke: tobacco leaves that have been made into a cylinder


roll-on: a woman's foundation garment rolled on to the hips


roll-on: a dispenser of a liquid cosmetic (such as a deodorant) having a revolving ball as an applicator


roll-on roll-off: a method of transport (as a ferry or train or plane) that vehicles roll onto at the beginning and roll off of at the destination


Rolodex: (trademark) a desktop rotary card index with removable cards; usually used for names, addresses, and telephone numbers


Roman arch: a round arch drawn from a single center


semicircular arch: a round arch drawn from a single center


Roman building: a building constructed by the ancient Romans


Roman candle: a cylindrical firework that projects a series of colored balls of fire


romper: a one-piece garment for children to wear at play; the lower part is shaped like bloomers


romper suit: a one-piece garment for children to wear at play; the lower part is shaped like bloomers


rood screen: a screen in a church; separates the nave from the choir or chancel


roof: a protective covering that covers or forms the top of a building


roof: protective covering on top of a motor vehicle


roof garden: a garden on a flat roof of a building


roofing: material used to construct a roof


roof peak: the highest point of a roof


room: an area within a building enclosed by walls and floor and ceiling


roomette: a small private compartment for one on a sleeping car


room light: light that provides general illumination for a room


roost: a perch on which domestic fowl rest or sleep


roost: a shelter with perches for fowl or other birds


root cellar: an excavation where root vegetables are stored


cellar: an excavation where root vegetables are stored


rope: a strong line


rope bridge: a bridge consisting of ropes


rope ladder: a ladder with side pieces of rope


rope tow: a ski tow offering only a moving rope to hold onto


ropewalk: workplace consisting of a long narrow path or shed where rope is made


rope yard: workplace consisting of a long narrow path or shed where rope is made


rope yarn: the strands out of which ropes are made


rosary: a string of beads used in counting prayers (especially by Catholics)


prayer beads: a string of beads used in counting prayers (especially by Catholics)


rose bed: a flower bed in which roses are growing


bed of roses: a flower bed in which roses are growing


rose garden: a garden for growing roses


rosemaling: a Scandinavian style of carved or painted decoration (as on furniture or walls or dinnerware) consisting of floral motifs


rosette: an ornament or pattern resembling a rose that is worn as a badge of office or as recognition of having won an honor


rose water: perfume consisting of water scented with oil of roses


rose window: circular window filled with tracery


rosette: circular window filled with tracery


rosin bag: a bag filled with rosin; used by baseball pitchers to improve their grip on the ball


rotary actuator: (computer science) the actuator that moves a read/write head to the proper data track


positioner: (computer science) the actuator that moves a read/write head to the proper data track


rotary engine: an internal-combustion engine in which power is transmitted directly to rotating components


rotary press: a printing press for printing from a revolving cylinder


rotating mechanism: a mechanism that rotates


rotating shaft: a revolving rod that transmits power or motion


shaft: a revolving rod that transmits power or motion


rotisserie: a restaurant that specializes in roasted and barbecued meats


rotisserie: an oven or broiler equipped with a rotating spit on which meat cooks as it turns


rotor: rotating mechanism consisting of an assembly of rotating airfoils


rotor: the rotating armature of a motor or generator


rotor coil: the rotating armature of a motor or generator


rotor: the revolving bar of a distributor


rotor blade: the long airfoil that rotates to provide the lift that supports a helicopter in the air


rotary wing: the long airfoil that rotates to provide the lift that supports a helicopter in the air


rotor head: the axis around which the major rotor of a helicopter turns


rotor shaft: the axis around which the major rotor of a helicopter turns


rotunda: a large circular room


rotunda: a building having a circular plan and a dome


rouge: makeup consisting of a pink or red powder applied to the cheeks


paint: makeup consisting of a pink or red powder applied to the cheeks


blusher: makeup consisting of a pink or red powder applied to the cheeks


roughcast: a rough preliminary model


rouleau: a roll of coins wrapped in paper


rouleau: a roll of ribbon


roulette: a wheel with teeth for making a row of perforations


toothed wheel: a wheel with teeth for making a row of perforations


roulette ball: the ball used to play roulette


roulette wheel: game equipment consisting of a wheel with slots that is used for gambling; the wheel rotates horizontally and players bet on which slot the roulette ball will stop in


wheel: game equipment consisting of a wheel with slots that is used for gambling; the wheel rotates horizontally and players bet on which slot the roulette ball will stop in


round: a charge of ammunition for a single shot


unit of ammunition: a charge of ammunition for a single shot


one shot: a charge of ammunition for a single shot


round arch: an arch formed in a continuous curve; characteristic of Roman architecture


round-bottom flask: a spherical flask with a narrow neck


roundel: round piece of armor plate that protects the armpit


rounder: a tool for rounding corners or edges


round file: a file with a circular cross section; used to file the inside of holes


roundhouse: workplace consisting of a circular building for repairing locomotives


Round Table: (legend) the circular table for King Arthur and his knights


King Arthur's Round Table: (legend) the circular table for King Arthur and his knights


router: a power tool with a shaped cutter; used in carpentry for cutting grooves


router: (computer science) a device that forwards data packets between computer networks


router plane: a woodworking plane with a narrow cutting head that will make grooves with smooth bottoms


rowel: a small spiked wheel at the end of a spur


row house: a house that is one of a row of identical houses situated side by side and sharing common walls


town house: a house that is one of a row of identical houses situated side by side and sharing common walls


rowing boat: a rowboat


rowlock arch: an arch that is formed with more than one concentric row of voussoirs


row of bricks: a course of bricks place next to each other (usually in a straight line)


royal: a sail set next above the topgallant on a royal mast


royal brace: a brace to secure the royal mast


royal mast: topmast immediately above the topgallant mast


rubber band: a narrow band of elastic rubber used to hold things (such as papers) together


elastic band: a narrow band of elastic rubber used to hold things (such as papers) together


elastic: a narrow band of elastic rubber used to hold things (such as papers) together


rubber boot: a high boot made of rubber


gum boot: a high boot made of rubber


rubber bullet: a bullet made of hard rubber; designed for use in crowd control


rubber eraser: an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil


rubber: an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil


pencil eraser: an eraser made of rubber (or of a synthetic material with properties similar to rubber); commonly mounted at one end of a pencil


rubbing: representation consisting of a copy (as of an engraving) made by laying paper over something and rubbing it with charcoal


rubbing alcohol: lotion consisting of a poisonous solution of isopropyl alcohol or denatured ethanol alcohol for external use


rubefacient: a medicine for external application that produces redness of the skin


rudder: (nautical) steering mechanism consisting of a hinged vertical plate mounted at the stern of a vessel


rudder: a hinged vertical airfoil mounted at the tail of an aircraft and used to make horizontal course changes


rudder blade: the vertical blade on a rudder


rudderpost: a vertical post at the forward edge of a rudder that enables the rudder to pivot


rudderstock: a vertical post at the forward edge of a rudder that enables the rudder to pivot


rue: (French) a street or road in France


rug: floor covering consisting of a piece of thick heavy fabric (usually with nap or pile)


carpet: floor covering consisting of a piece of thick heavy fabric (usually with nap or pile)


carpeting: floor covering consisting of a piece of thick heavy fabric (usually with nap or pile)


rugby ball: inflated oval ball used in playing rugby


ruin: a ruined building


rule: measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths


ruler: measuring stick consisting of a strip of wood or metal or plastic with a straight edge that is used for drawing straight lines and measuring lengths


rumble: a servant's seat (or luggage compartment) in the rear of a carriage


rumble seat: a folding outside seat in the back of some early cars


rummer: a large drinking glass (ovoid bowl on a stem) for drinking toasts


rumpus room: a recreation room for noisy activities (parties or children's play etc)


playroom: a recreation room for noisy activities (parties or children's play etc)


game room: a recreation room for noisy activities (parties or children's play etc)


runcible spoon: a fork-like spoon with a cutting edge; coined by Edward Lear


rundle: one of the crosspieces that form the steps of a ladder


spoke: one of the crosspieces that form the steps of a ladder


rung: one of the crosspieces that form the steps of a ladder


rung: a crosspiece between the legs of a chair


round: a crosspiece between the legs of a chair


stave: a crosspiece between the legs of a chair


runner: device consisting of the parts on which something can slide along


runner: a long narrow carpet


running board: a narrow footboard serving as a step beneath the doors of some old cars


running shoe: a light comfortable shoe designed for running


running stitch: small, even, hand stitches run in and out


running suit: a matching jacket and pants worn by joggers and made of fabric that absorbs perspiration


runway: a strip of level paved surface where planes can take off and land


runway: a narrow platform extending from the stage into the audience in a theater or nightclub etc.


runway: a chute down which logs can slide


rushlight: a tallow candle with a rush stem as the wick


rush candle: a tallow candle with a rush stem as the wick


russet: a reddish brown homespun fabric


rya: a shag rug made in Sweden


rya rug: a shag rug made in Sweden


saber: a fencing sword with a v-shaped blade and a slightly curved handle


sabre: a fencing sword with a v-shaped blade and a slightly curved handle


saber saw: a portable power saw with a reciprocating blade; can be used with a variety of blades depending on the application and kind of cut; generally have a plate that rides on the surface that is being cut


jigsaw: a portable power saw with a reciprocating blade; can be used with a variety of blades depending on the application and kind of cut; generally have a plate that rides on the surface that is being cut


reciprocating saw: a portable power saw with a reciprocating blade; can be used with a variety of blades depending on the application and kind of cut; generally have a plate that rides on the surface that is being cut


Sabin vaccine: an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis


oral poliovirus vaccine: an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis


OPV: an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis


trivalent live oral poliomyelitis vaccine: an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis


TOPV: an oral vaccine (containing live but weakened poliovirus) that is given to provide immunity to poliomyelitis


sable: a scarf (or trimming) made of sable


sable: an artist's brush made of sable hairs


sable brush: an artist's brush made of sable hairs


sable's hair pencil: an artist's brush made of sable hairs


sable coat: a fur coat made of sable furs


sabot: a shoe carved from a single block of wood


wooden shoe: a shoe carved from a single block of wood


sachet: a small soft bag containing perfumed powder; used to perfume items in a drawer or chest


sack: a bag made of paper or plastic for holding customer's purchases


poke: a bag made of paper or plastic for holding customer's purchases


paper bag: a bag made of paper or plastic for holding customer's purchases


carrier bag: a bag made of paper or plastic for holding customer's purchases


sack: a woman's full loose hiplength jacket


sacque: a woman's full loose hiplength jacket


sackbut: a medieval musical instrument resembling a trombone


sackcloth: a coarse cloth resembling sacking


sackcloth: a garment made of coarse sacking; formerly worn as an indication of remorse


sack coat: man's hiplength coat with a straight back; the jacket of a suit


sacking: coarse fabric used for bags or sacks


bagging: coarse fabric used for bags or sacks


saddle: a seat for the rider of a horse or camel


saddle: a piece of leather across the instep of a shoe


saddlebag: a large bag (or pair of bags) hung over a saddle


saddle blanket: stable gear consisting of a blanket placed under the saddle


saddlecloth: stable gear consisting of a blanket placed under the saddle


horse blanket: stable gear consisting of a blanket placed under the saddle


saddle oxford: an oxford with a saddle of contrasting color


saddle shoe: an oxford with a saddle of contrasting color


saddlery: workshop where a saddler works


saddle seat: a chair seat that is slightly concave and sometimes has a thickened ridge in the center


saddle soap: a mild soap for cleansing and conditioning leather


leather soap: a mild soap for cleansing and conditioning leather


saddle stitch: a decorative overcast or running stitch, especially in a contrasting color


safe: strongbox where valuables can be safely kept


safe: a ventilated or refrigerated cupboard for securing provisions from pests


safe-deposit: a fireproof metal strongbox (usually in a bank) for storing valuables


safe-deposit box: a fireproof metal strongbox (usually in a bank) for storing valuables


safety-deposit: a fireproof metal strongbox (usually in a bank) for storing valuables


safety deposit box: a fireproof metal strongbox (usually in a bank) for storing valuables


deposit box: a fireproof metal strongbox (usually in a bank) for storing valuables


lockbox: a fireproof metal strongbox (usually in a bank) for storing valuables


safehold: a refuge from attack


safe house: a house used as a hiding place or refuge by members of certain organizations


safety arch: an undecorated arch that is included in order to strengthen or support a construction


safety belt: belt attaching you to some object as a restraint in order to prevent you from getting hurt


life belt: belt attaching you to some object as a restraint in order to prevent you from getting hurt


safety harness: belt attaching you to some object as a restraint in order to prevent you from getting hurt


safety bicycle: bicycle that has two wheels of equal size; pedals are connected to the rear wheel by a multiplying gear


safety bike: bicycle that has two wheels of equal size; pedals are connected to the rear wheel by a multiplying gear


safety bolt: a bolt that cannot be moved from outside the door or gate


safety lock: a bolt that cannot be moved from outside the door or gate


safety catch: guard consisting of a locking device that prevents a weapon from being fired


safety lock: guard consisting of a locking device that prevents a weapon from being fired


safety curtain: a fireproof theater curtain to be dropped in case of fire


safety fuse: a slow-burning fuse consisting of a tube or cord filled or saturated with combustible matter; used to ignite detonators from a distance


safety lamp: an oil lamp that will not ignite flammable gases (methane)


Davy lamp: an oil lamp that will not ignite flammable gases (methane)


safety match: a paper match that strikes only on a specially prepared surface


book matches: a paper match that strikes only on a specially prepared surface


safety net: a large strong net to catch circus acrobats who fall or jump from a trapeze


safety pin: a pin in the form of a clasp; has a guard so the point of the pin will not stick the user


safety rail: a railing placed alongside a stairway or road for safety


guardrail: a railing placed alongside a stairway or road for safety


safety razor: a razor with a guard to prevent deep cuts in the skin


safety valve: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level


relief valve: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level


escape valve: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level


escape cock: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level


escape: a valve in a container in which pressure can build up (as a steam boiler); it opens automatically when the pressure reaches a dangerous level


sail: a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel


canvas: a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel


canvass: a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel


sheet: a large piece of fabric (usually canvas fabric) by means of which wind is used to propel a sailing vessel


sail: any structure that resembles a sail


sailboat: a small sailing vessel; usually with a single mast


sailing boat: a small sailing vessel; usually with a single mast


sailcloth: a strong fabric (such as cotton canvas) used for making sails and tents


sailing vessel: a vessel that is powered by the wind; often having several masts


sailing ship: a vessel that is powered by the wind; often having several masts


sailing warship: a warship that was powered by sails and equipped with many heavy guns; not built after the middle of the 19th century


sailor cap: a cap worn by sailors


sailor suit: a boy's ensemble; copied from a sailor's uniform


Saint Lawrence Seaway: a seaway involving the Saint Lawrence River and the Great Lakes that was developed jointly by Canada and the United States; oceangoing ships can travel as far west as Lake Superior


St. Lawrence Seaway: a seaway involving the Saint Lawrence River and the Great Lakes that was developed jointly by Canada and the United States; oceangoing ships can travel as far west as Lake Superior


salad bar: a bar where diners can assemble a salad to their own taste


salad bowl: a large bowl for mixing and serving a salad


salad fork: a fork intended for eating salads


salad plate: a plate or bowl for individual servings of salad


salad bowl: a plate or bowl for individual servings of salad


salinometer: a hydrometer that determines the concentration of salt solutions by measuring their density


Salk vaccine: a poliovirus vaccine consisting of inactivated polio virus that is injected subcutaneously to provide immunity to poliomyelitis


IPV: a poliovirus vaccine consisting of inactivated polio virus that is injected subcutaneously to provide immunity to poliomyelitis


sallet: a light medieval helmet with a slit for vision


salade: a light medieval helmet with a slit for vision


salon: elegant sitting room where guests are received


salon: gallery where works of art can be displayed


salon: a shop where hairdressers and beauticians work


beauty salon: a shop where hairdressers and beauticians work


beauty parlor: a shop where hairdressers and beauticians work


beauty parlour: a shop where hairdressers and beauticians work


beauty shop: a shop where hairdressers and beauticians work


saltbox: a type of house built in New England; has two stories in front and one behind


saltcellar: a small container for holding salt at the dining table


salt mine: a mine where salt is dug


saltshaker: a shaker with a perforated top for sprinkling salt


salt shaker: a shaker with a perforated top for sprinkling salt


saltworks: a plant where salt is produced commercially


salver: a tray (or large plate) for serving food or drinks; usually made of silver


salvinorin: a hallucinogen obtained from Salvia divinorum


salwar: a pair of light loose trousers with a tight fit around the ankles; worn by women from the Indian subcontinent (usually with a kameez)


shalwar: a pair of light loose trousers with a tight fit around the ankles; worn by women from the Indian subcontinent (usually with a kameez)


Salyut: either of two Soviet space stations launched in the 1970s


Sam Browne belt: leather belt supported by a strap over the right shoulder


samisen: a Japanese stringed instrument resembling a banjo with a long neck and three strings and a fretted fingerboard and a rectangular soundbox; played with a plectrum


shamisen: a Japanese stringed instrument resembling a banjo with a long neck and three strings and a fretted fingerboard and a rectangular soundbox; played with a plectrum


samite: a heavy silk fabric (often woven with silver or gold threads); used to make clothing in the Middle Ages


samovar: a metal urn with a spigot at the base; used in Russia to boil water for tea


sampan: an Asian skiff usually propelled by two oars


sampler: a piece of embroidery demonstrating skill with various stitches


sampling station: an observation station that is set up to make sample observations of something


sampler: an observation station that is set up to make sample observations of something


sanatorium: a hospital for recuperation or for the treatment of chronic diseases


sanatarium: a hospital for recuperation or for the treatment of chronic diseases


sanitarium: a hospital for recuperation or for the treatment of chronic diseases


sanctuary: a consecrated place where sacred objects are kept


sandal: a shoe consisting of a sole fastened by straps to the foot


sandbag: a bag filled with sand; used as a weapon or to build walls or as ballast


sandblaster: a tool that throws out a blast of steam laden with sand; used to clean or grind hard surfaces


sandbox: a plaything consisting of a pile of sand or a box filled with sand for children to play in


sandpile: a plaything consisting of a pile of sand or a box filled with sand for children to play in


sandpit: a plaything consisting of a pile of sand or a box filled with sand for children to play in


sandbox: mold consisting of a box with sand shaped to mold metal


sandglass: timepiece in which the passage of time is indicated by the flow of sand from one transparent container to another through a narrow passage


sand painting: a painting done by Amerindians (especially Navaho); made of fine colored sands on a neutral background


sand wedge: a wedge used to get out of sand traps


sandwich board: signboard consisting of two hinged boards that hang front and back from the shoulders of a walker and are used to display advertisements


sanitary napkin: a disposable absorbent pad (trade name Kotex); worn to absorb menstrual flow


sanitary towel: a disposable absorbent pad (trade name Kotex); worn to absorb menstrual flow


Kotex: a disposable absorbent pad (trade name Kotex); worn to absorb menstrual flow


Santa Fe Trail: a trail that extends from Missouri to New Mexico; an important route for settlers moving west in the 19th century


cling film: a thin plastic film made of saran (trade name Saran Wrap) that sticks to itself; used for wrapping food


clingfilm: a thin plastic film made of saran (trade name Saran Wrap) that sticks to itself; used for wrapping food


Saran Wrap: a thin plastic film made of saran (trade name Saran Wrap) that sticks to itself; used for wrapping food


sarcenet: a fine soft silk fabric often used for linings


sarsenet: a fine soft silk fabric often used for linings


sarcophagus: a stone coffin (usually bearing sculpture or inscriptions)


sari: a dress worn primarily by Hindu women; consists of several yards of light material that is draped around the body


saree: a dress worn primarily by Hindu women; consists of several yards of light material that is draped around the body


sarong: a loose skirt consisting of brightly colored fabric wrapped around the body; worn by both women and men in the South Pacific


sash: a framework that holds the panes of a window in the window frame


window sash: a framework that holds the panes of a window in the window frame


sash cord: a strong cord connecting a sash weight to a sliding sash


sash line: a strong cord connecting a sash weight to a sliding sash


sash fastener: a lock attached to the sashes of a double hung window that can fix both in the shut position


sash lock: a lock attached to the sashes of a double hung window that can fix both in the shut position


window lock: a lock attached to the sashes of a double hung window that can fix both in the shut position


sash weight: a counterweight for a sliding sash


sash window: a window with (usually two) sashes that slide vertically to let in air


satchel: luggage consisting of a small case with a flat bottom and (usually) a shoulder strap


sateen: a cotton fabric with a satiny finish


satellite: man-made equipment that orbits around the earth or the moon


artificial satellite: man-made equipment that orbits around the earth or the moon


orbiter: man-made equipment that orbits around the earth or the moon


satellite receiver: a receiver on a communications satellite


satellite television: a television system in which the signal is transmitted to an orbiting satellite that receives the signal and amplifies it and transmits it back to earth


satellite TV: a television system in which the signal is transmitted to an orbiting satellite that receives the signal and amplifies it and transmits it back to earth


satellite transmitter: a transmitter on a communications satellite


satin: a smooth fabric of silk or rayon; has a glossy face and a dull back


satinet: a fabric with a finish resembling satin but made partly or wholly from cotton or synthetic fiber


satinette: a fabric with a finish resembling satin but made partly or wholly from cotton or synthetic fiber


satin stitch: flat stitches worked so closely as to resemble satin


satin weave: a weave in which the filling and warp threads intersect in such a way as to give a smooth compact surface with no distinguishable twill line


Saturday night special: a cheap handgun that is easily obtained


saucepan: a deep pan with a handle; used for stewing or boiling


saucepot: a cooking pot that has handles on either side and tight fitting lid; used for stewing or boiling


saucer: a small shallow dish for holding a cup at the table


sauna: a Finnish steam bath; steam is produced by pouring water over heated rocks


sweat room: a Finnish steam bath; steam is produced by pouring water over heated rocks


save-all: a net hung between ship and pier while loading a ship


save-all: a sail set to catch wind spilled from a larger sail


save-all: a receptacle for catching waste products for further use


savings bank: a container (usually with a slot in the top) for keeping money at home


coin bank: a container (usually with a slot in the top) for keeping money at home


money box: a container (usually with a slot in the top) for keeping money at home


bank: a container (usually with a slot in the top) for keeping money at home


saw: hand tool having a toothed blade for cutting


sawdust doll: a doll that is stuffed with sawdust


sawdust saloon: a saloon whose floor is covered with sawdust


sawed-off shotgun: a shotgun with short barrels


sawhorse: a framework for holding wood that is being sawed


horse: a framework for holding wood that is being sawed


sawbuck: a framework for holding wood that is being sawed


buck: a framework for holding wood that is being sawed


sawmill: a large sawing machine


saw set: a tool used to bend each alternate sawtooth at a slight angle outward


sawtooth: a serration on a saw blade


sax: a single-reed woodwind with a conical bore


saxophone: a single-reed woodwind with a conical bore


saxhorn: any of a family of brass wind instruments that resemble a bugle with valves


scabbard: a sheath for a sword or dagger or bayonet


scaffold: a temporary arrangement erected around a building for convenience of workers


scaffold: a platform from which criminals are executed (hanged or beheaded)


scaffolding: a system of scaffolds


staging: a system of scaffolds


scale: an indicator having a graduated sequence of marks


scale: a measuring instrument for weighing; shows amount of mass


weighing machine: a measuring instrument for weighing; shows amount of mass


scaler: an electronic pulse counter used to count pulses that occur too rapidly to be recorded individually


scaling ladder: a ladder used to scale walls (as in an attack)


scalpel: a thin straight surgical knife used in dissection and surgery


scan: an image produced by scanning


CAT scan: an image produced by scanning


scanner: a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition


electronic scanner: a radio receiver that moves automatically across some selected range of frequencies looking for some signal or condition


scanner: a radar dish that rotates or oscillates in order to scan a broad area


scanner: an electronic device that generates a digital representation of an image for data input to a computer


digital scanner: an electronic device that generates a digital representation of an image for data input to a computer


image scanner: an electronic device that generates a digital representation of an image for data input to a computer


scantling: an upright in house framing


stud: an upright in house framing


scapular: garment consisting of a long wide piece of woolen cloth worn over the shoulders with an opening for the head; part of a monastic habit


scapulary: garment consisting of a long wide piece of woolen cloth worn over the shoulders with an opening for the head; part of a monastic habit


scarecrow: an effigy in the shape of a man to frighten birds away from seeds


straw man: an effigy in the shape of a man to frighten birds away from seeds


strawman: an effigy in the shape of a man to frighten birds away from seeds


bird-scarer: an effigy in the shape of a man to frighten birds away from seeds


scarer: an effigy in the shape of a man to frighten birds away from seeds


scarf: a garment worn around the head or neck or shoulders for warmth or decoration


scarf joint: a joint made by notching the ends of two pieces of timber or metal so that they will lock together end-to-end


scarf: a joint made by notching the ends of two pieces of timber or metal so that they will lock together end-to-end


scatter pin: small pin usually worn in groups of two or more


scatter rug: a small rug; several can be used in a room


throw rug: a small rug; several can be used in a room


scauper: a graver used to scoop out broad areas when engraving wood or metal


scorper: a graver used to scoop out broad areas when engraving wood or metal


scene: graphic art consisting of the graphic or photographic representation of a visual percept


view: graphic art consisting of the graphic or photographic representation of a visual percept


scenery: the painted structures of a stage set that are intended to suggest a particular locale


scene: the painted structures of a stage set that are intended to suggest a particular locale


scenic railway: small railway in an amusement park


scheduler: computer hardware that arranges jobs to be done by the computer in an appropriate order


schematic: diagram of an electrical or mechanical system


schematic drawing: diagram of an electrical or mechanical system


schlock: merchandise that is shoddy or inferior


shlock: merchandise that is shoddy or inferior


dreck: merchandise that is shoddy or inferior


Schmidt telescope: reflecting telescope that has plate that corrects for aberration so a wide area of sky can be photographed


Schmidt camera: reflecting telescope that has plate that corrects for aberration so a wide area of sky can be photographed


school: a building where young people receive education


schoolhouse: a building where young people receive education


schoolbag: a bag for carrying school books and supplies


school bell: a bell rung to announce beginning or ending of class


school bus: a bus used to transport children to or from school


school crossing: a pedestrian crossing where school children cross a street on the way to school


school ship: a ship used to train students as sailors


training ship: a ship used to train students as sailors


school system: establishment including the plant and equipment for providing education from kindergarten through high school


schooner: sailing vessel used in former times


schooner: a large beer glass


science museum: a museum that collects and displays objects having scientific interest


scientific instrument: an instrument used by scientists


scimitar: a curved oriental saber; the edge is on the convex side of the blade


scintillation counter: counter tube in which light flashes when exposed to ionizing radiation


scissors: an edge tool having two crossed pivoting blades


pair of scissors: an edge tool having two crossed pivoting blades


sclerometer: a measuring instrument that measures the hardness of materials by penetrating them with a stylus that has a diamond point


scoinson arch: an arch that supports part of the wall


sconcheon arch: an arch that supports part of the wall


sconce: a decorative wall bracket for holding candles or other sources of light


sconce: a candle or flaming torch secured in a sconce


sconce: a small fort or earthwork defending a ford, pass, or castle gate


sconce: a shelter or screen providing protection from enemy fire or from the weather


scoop: a large ladle


scoop: the shovel or bucket of a dredge or backhoe


scoop shovel: the shovel or bucket of a dredge or backhoe


scooter: child's two-wheeled vehicle operated by foot


scopolamine: an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures


hyoscine: an alkaloid with anticholinergic effects that is used as a sedative and to treat nausea and to dilate the pupils in ophthalmic procedures


scoreboard: a large board for displaying the score of a contest (and some other information)


scourge: a whip used to inflict punishment (often used for pedantic humor)


flagellum: a whip used to inflict punishment (often used for pedantic humor)


scouring pad: a small abrasive cleaning pad used for scouring pots and pans


scow: a barge carrying bulk materials in an open hold


scow: any of various flat-bottomed boats with sloping ends


scrambler: electronic equipment that makes speech unintelligible during transmission and restores it at reception


scrap: a small piece of something that is left over after the rest has been used


scrapbook: an album into which clippings or notes or pictures can be pasted


scraper: any of various hand tools for scraping


scratcher: a device used for scratching


scratchpad: (computer science) a high-speed internal memory used for temporary storage of preliminary information


screed: an accurately levelled strip of material placed on a wall or floor as guide for the even application of plaster or concrete


screen: a protective covering consisting of netting; can be mounted in a frame


screen: a covering that serves to conceal or shelter something


cover: a covering that serves to conceal or shelter something


covert: a covering that serves to conceal or shelter something


concealment: a covering that serves to conceal or shelter something


screen: partition consisting of a decorative frame or panel that serves to divide a space


screen: the display that is electronically created on the surface of the large end of a cathode-ray tube


CRT screen: the display that is electronically created on the surface of the large end of a cathode-ray tube


screen: a white or silvered surface where pictures can be projected for viewing


silver screen: a white or silvered surface where pictures can be projected for viewing


projection screen: a white or silvered surface where pictures can be projected for viewing


screen door: a door that consists of a frame holding metallic or plastic netting; used to allow ventilation and to keep insects from entering a building through the open door


screen: a door that consists of a frame holding metallic or plastic netting; used to allow ventilation and to keep insects from entering a building through the open door


screening: fabric of metal or plastic mesh


screen saver: (computer science) a moving design that appears on a computer screen when there has been no input for a specified period of time


screw: a fastener with a tapered threaded shank and a slotted head


screw: a propeller with several angled blades that rotates to push against water or air


screw propeller: a propeller with several angled blades that rotates to push against water or air


screw: a simple machine of the inclined-plane type consisting of a spirally threaded cylindrical rod that engages with a similarly threaded hole


screwdriver: a hand tool for driving screws; has a tip that fits into the head of a screw


screw eye: a woodscrew having its shank bent into a ring


screw key: a wrench for turning a screw


screw thread: the raised helical rib going around a screw


thread: the raised helical rib going around a screw


screwtop: the top of a container that must be screwed off and on


screw wrench: adjustable wrench that has one jaw that can be adjusted by turning a screw


scribble: an aimless drawing


scrabble: an aimless drawing


doodle: an aimless drawing


scriber: a sharp-pointed awl for marking wood or metal to be cut


scribe: a sharp-pointed awl for marking wood or metal to be cut


scratch awl: a sharp-pointed awl for marking wood or metal to be cut


scrim: a firm open-weave fabric used for a curtain in the theater


scrimshaw: a carving (or engraving) on whalebone, whale ivory, walrus tusk, etc., usually by American whalers


scriptorium: a room in a monastery that is set aside for writing or copying manuscripts


scrubber: a purifier that removes impurities from a gas


scrub brush: a brush with short stiff bristles for heavy cleaning


scrubbing brush: a brush with short stiff bristles for heavy cleaning


scrubber: a brush with short stiff bristles for heavy cleaning


scrub plane: a narrow woodworking plane used to cut away excess stock


scuffer: a lightweight flexible sandal with a sturdy sole; worn as play shoes by children and as sportswear by adults


scuffle: a hoe that is used by pushing rather than pulling


scuffle hoe: a hoe that is used by pushing rather than pulling


Dutch hoe: a hoe that is used by pushing rather than pulling


scull: a racing shell that is propelled by sculls


scull: each of a pair of short oars that are used by a single oarsman


scull: a long oar that is mounted at the stern of a boat and moved left and right to propel the boat forward


scullery: a small room (in large old British houses) next to the kitchen; where kitchen utensils are cleaned and kept and other rough household jobs are done


sculpture: a three-dimensional work of plastic art


scum: a film of impurities or vegetation that can form on the surface of a liquid


scupper: drain that allows water on the deck of a vessel to flow overboard


scuttle: container for coal; shaped to permit pouring the coal onto the fire


coal scuttle: container for coal; shaped to permit pouring the coal onto the fire


scyphus: an ancient Greek drinking cup; two handles and footed base


scythe: an edge tool for cutting grass; has a long handle that must be held with both hands and a curved blade that moves parallel to the ground


sea anchor: restraint consisting of a canvas covered frame that floats behind a vessel; prevents drifting or maintains the heading into a wind


drogue: restraint consisting of a canvas covered frame that floats behind a vessel; prevents drifting or maintains the heading into a wind


seabag: a cylindrical drawstring bag used by sailors to hold their clothing and other gear


sea boat: a boat that is seaworthy; that is adapted to the open seas


sea chest: a sailor's storage chest for personal property


seal: a device incised to make an impression; used to secure a closing or to authenticate documents


stamp: a device incised to make an impression; used to secure a closing or to authenticate documents


seal: fastener that provides a tight and perfect closure


seal: a finishing coat applied to exclude moisture


sea ladder: (nautical) ladder to be lowered over a ship's side for coming aboard


sea steps: (nautical) ladder to be lowered over a ship's side for coming aboard


seal bomb: a small explosive device (resembling a firecracker) that is used underwater in order to frighten mammals away from fishing grounds


sealing wax: fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters


seal: fastener consisting of a resinous composition that is plastic when warm; used for sealing documents and parcels and letters


sealskin: a garment (as a jacket or coat or robe) made of sealskin


seam: joint consisting of a line formed by joining two pieces


seaplane: an airplane that can land on or take off from water


hydroplane: an airplane that can land on or take off from water


searchlight: a light source with reflectors that projects a beam of light in a particular direction


searing iron: a hot iron used to destroy tissue


Sears Tower: a skyscraper built in Chicago in 1974; 1454 feet tall


seascape: a painting of the sea (as distinguished from a landscape)


waterscape: a painting of the sea (as distinguished from a landscape)


seat: any support where you can sit (especially the part of a chair or bench etc. on which you sit)


seat: furniture that is designed for sitting on


seat: the cloth covering for the buttocks


seat: a part of a machine that supports or guides another part


seat belt: a safety belt used in a car or plane to hold you in your seat in case of an accident


seatbelt: a safety belt used in a car or plane to hold you in your seat in case of an accident


seat cushion: a cushion that makes a seat more comfortable


seating: an area that includes places where several people can sit


seats: an area that includes places where several people can sit


seating room: an area that includes places where several people can sit


seating area: an area that includes places where several people can sit


seaway: a lane at sea that is a regularly used route for vessels


sea lane: a lane at sea that is a regularly used route for vessels


ship route: a lane at sea that is a regularly used route for vessels


trade route: a lane at sea that is a regularly used route for vessels


secateurs: small pruning shears with a spring that holds the handles open and a single blade that closes against a flat surface


secobarbital sodium: barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions


secobarbital: barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions


Seconal: barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions


red devil: barbiturate that is a white odorless slightly bitter powder (trade name Seconal) used as a sodium salt for sedation and to treat convulsions


secondary coil: coil such that current is induced in it by passing a current through the primary coil


secondary winding: coil such that current is induced in it by passing a current through the primary coil


secondary: coil such that current is induced in it by passing a current through the primary coil


second balcony: rearmost or uppermost area in the balcony containing the least expensive seats


family circle: rearmost or uppermost area in the balcony containing the least expensive seats


upper balcony: rearmost or uppermost area in the balcony containing the least expensive seats


peanut gallery: rearmost or uppermost area in the balcony containing the least expensive seats


second base: the base that must be touched second by a base runner in baseball


second gear: the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle


second: the gear that has the second lowest forward gear ratio in the gear box of a motor vehicle


second hand: hand marking seconds on a timepiece


secretary: a desk used for writing


writing table: a desk used for writing


escritoire: a desk used for writing


secretaire: a desk used for writing


section: one of several parts or pieces that fit with others to constitute a whole object


segment: one of several parts or pieces that fit with others to constitute a whole object


sectional: a piece of furniture made up of sections that can be arranged individually or together


sector: measuring instrument consisting of two graduated arms hinged at one end


security blanket: a blanket (or toy) that a child carries around in order to reduce anxiety


security blanket: anything that an adult person uses to reduce anxiety


security system: an electrical device that sets off an alarm when someone tries to break in


security measure: an electrical device that sets off an alarm when someone tries to break in


security: an electrical device that sets off an alarm when someone tries to break in


security system: (computing) a system that enforces boundaries between computer networks


sedan: a car that is closed and that has front and rear seats and two or four doors


saloon: a car that is closed and that has front and rear seats and two or four doors


sedan: a closed litter for one passenger


sedan chair: a closed litter for one passenger


sedative: a drug that reduces excitability and calms a person


sedative drug: a drug that reduces excitability and calms a person


depressant: a drug that reduces excitability and calms a person


downer: a drug that reduces excitability and calms a person


sedative-hypnotic: a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep


sedative-hypnotic drug: a sedative that depresses activity of the central nervous system and reduces anxiety and induces sleep


seedbed: a bed where seedlings are grown before transplanting


seeder: a kitchen utensil that removes seeds from fruit


seeder: a mechanical device that sows grass seed or grain evenly over the ground


seeker: a missile equipped with a device that is attracted toward some kind of emission (heat or light or sound or radio waves)


seersucker: a light puckered fabric (usually striped)


seesaw: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


teeter: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


teeter-totter: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


teetertotter: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


teeterboard: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


tilting board: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


dandle board: a plaything consisting of a board balanced on a fulcrum; the board is ridden up and down by children at either end


segmental arch: a shallow arch; an arch that is less than a semicircle


Segway: (trademark) a self-balancing personal transportation device with two wheels; can operate in any level pedestrian environment


Segway Human Transporter: (trademark) a self-balancing personal transportation device with two wheels; can operate in any level pedestrian environment


Segway HT: (trademark) a self-balancing personal transportation device with two wheels; can operate in any level pedestrian environment


seidel: a glass for beer


seine: a large fishnet that hangs vertically, with floats at the top and weights at the bottom


seismogram: the graphical record of an earth tremor made by using a seismograph


seismograph: a measuring instrument for detecting and measuring the intensity and direction and duration of movements of the ground (as an earthquake)


seizing: small stuff that is used for lashing two or more ropes together


selective-serotonin reuptake inhibitor: an antidepressant drug that acts by blocking the reuptake of serotonin so that more serotonin is available to act on receptors in the brain


SSRI: an antidepressant drug that acts by blocking the reuptake of serotonin so that more serotonin is available to act on receptors in the brain


selector: a switch that is used to select among alternatives


selector switch: a switch that is used to select among alternatives


selenium cell: a photoelectric cell that uses a strip of selenium


self-feeder: a machine that automatically provides a supply of some material


feeder: a machine that automatically provides a supply of some material


self-portrait: a portrait of yourself created by yourself


self-propelled vehicle: a wheeled vehicle that carries in itself a means of propulsion


self-registering thermometer: a thermometer that records the temperature automatically


self-starter: an electric starting motor that automatically starts an internal-combustion engine


selsyn: a system consisting of a generator and a motor so connected that the motor will assume the same relative position as the generator; the generator and the motor are synchronized


synchro: a system consisting of a generator and a motor so connected that the motor will assume the same relative position as the generator; the generator and the motor are synchronized


selvage: the edge of a fabric that is woven so that it will not ravel or fray


selvedge: the edge of a fabric that is woven so that it will not ravel or fray


selvage: border consisting of an ornamental fringe at either end of an oriental carpet


selvedge: border consisting of an ornamental fringe at either end of an oriental carpet


semaphore: an apparatus for visual signaling with lights or mechanically moving arms


semi-abstraction: a semiabstract painting


semiautomatic firearm: an autoloader that fires only one shot at each pull of the trigger


semiautomatic pistol: a pistol that is a semiautomatic firearm capable of loading and firing continuously


semiautomatic: a pistol that is a semiautomatic firearm capable of loading and firing continuously


semiconductor device: a conductor made with semiconducting material


semiconductor unit: a conductor made with semiconducting material


semiconductor: a conductor made with semiconducting material


semi-detached house: a dwelling that is attached to something on only one side


semigloss: a paint that dries with a finish between glossy and flat


semitrailer: a trailer having wheels only in the rear; the front is supported by the towing vehicle


semi: a trailer having wheels only in the rear; the front is supported by the towing vehicle


sennit: flat braided cordage that is used on ships


sensitometer: a measuring instrument for measuring the light sensitivity of film over a range of exposures


sentry box: a small shelter with an open front to protect a sentry from the weather


separate: a garment that can be purchased separately and worn in combinations with other garments


septic tank: large tank where solid matter or sewage is disintegrated by bacteria


sequence: film consisting of a succession of related shots that develop a given subject in a movie


episode: film consisting of a succession of related shots that develop a given subject in a movie


sequencer: computer hardware that sorts data or programs into a predetermined sequence


sequencer: (chemistry) an apparatus that can determine the sequence of monomers in a polymer


sequenator: (chemistry) an apparatus that can determine the sequence of monomers in a polymer


sequin: adornment consisting of a small piece of shiny material used to decorate clothing


spangle: adornment consisting of a small piece of shiny material used to decorate clothing


diamante: adornment consisting of a small piece of shiny material used to decorate clothing


serape: a long brightly colored shawl; worn mainly by Mexican men


sarape: a long brightly colored shawl; worn mainly by Mexican men


serge: a twilled woolen fabric


serger: a sewing machine that overcasts the raw edges of a fabric with a V-shaped stitch


serial port: an interface (commonly used for modems and mice and some printers) that transmits data a bit at a time


series circuit: a circuit having its parts connected serially


serpent: an obsolete bass cornet; resembles a snake


serpent: a firework that moves in serpentine manner when ignited


serration: a single notch in a row of notches


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


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


server: utensil used in serving food or drink


server: (computer science) a computer that provides client stations with access to files and printers as shared resources to a computer network


host: (computer science) a computer that provides client stations with access to files and printers as shared resources to a computer network


service: tableware consisting of a complete set of articles (silver or dishware) for use at table


table service: tableware consisting of a complete set of articles (silver or dishware) for use at table


service club: a recreational center for servicemen


service door: an entrance intended for the use of servants or for delivery of goods and removal of refuse


service entrance: an entrance intended for the use of servants or for delivery of goods and removal of refuse


servant's entrance: an entrance intended for the use of servants or for delivery of goods and removal of refuse


service station: a station where gasoline and oil are sold and facilities are available for repairing or maintaining automobiles


serving cart: a handcart for serving food


serving dish: a dish used for serving food


servo: control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system


servomechanism: control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system


servosystem: control system that converts a small mechanical motion into one requiring much greater power; may include a negative feedback system


set: any electronic equipment that receives or transmits radio or tv signals


set-back: structure where a wall or building narrows abruptly


setoff: structure where a wall or building narrows abruptly


offset: structure where a wall or building narrows abruptly


set decoration: a decoration used as part of the set of a theatrical or movie production


set gun: a gun that is set to fire on any intruder that comes in contact with the wire that sets it off


spring gun: a gun that is set to fire on any intruder that comes in contact with the wire that sets it off


set piece: a piece of scenery intended to stand alone as part of the stage setting


setscrew: a screw (often without a head) that fits into the boss or hub of a wheel or cam etc. and prevents motion of the part relative to the shaft on which it is mounted


setscrew: a screw that is used to adjust the tension on a spring


set square: a try square with an adjustable sliding head


settee: a small sofa


settle: a long wooden bench with a back


settee: a long wooden bench with a back


settlement house: a center in an underprivileged area that provides community services


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


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


seventy-eight: a shellac based phonograph record that played at 78 revolutions per minute


78: a shellac based phonograph record that played at 78 revolutions per minute


Seven Wonders of the Ancient World: impressive monuments created in the ancient world that were regarded with awe


Seven Wonders of the World: impressive monuments created in the ancient world that were regarded with awe


sewage disposal plant: a plant for disposing of sewage


disposal plant: a plant for disposing of sewage


sewage farm: a farm that is irrigated and fertilized with raw sewage


sewage system: facility consisting of a system of sewers for carrying off liquid and solid sewage


sewer system: facility consisting of a system of sewers for carrying off liquid and solid sewage


sewage works: facility consisting of a system of sewers for carrying off liquid and solid sewage


sewer: a waste pipe that carries away sewage or surface water


sewerage: a waste pipe that carries away sewage or surface water


cloaca: a waste pipe that carries away sewage or surface water


sewer main: a main in a sewage system


sewer line: a main in a sewage system


sewing: needlework on which you are working with needle and thread


stitchery: needlework on which you are working with needle and thread


sewing basket: a workbasket in which sewing materials can be stored


sewing kit: a kit of articles used in sewing


sewing machine: a textile machine used as a home appliance for sewing


sewing needle: a needle used in sewing to pull thread through cloth


sewing room: a room set aside for sewing


sewing stitch: a stitch made with thread and a threaded sewing needle through fabric or leather


embroidery stitch: a stitch made with thread and a threaded sewing needle through fabric or leather


sextant: a measuring instrument for measuring the angular distance between celestial objects; resembles an octant


sgraffito: a ceramic or mural decoration made by scratching off a surface layer to reveal the ground


shackle: a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)


bond: a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)


hamper: a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)


trammel: a restraint that confines or restricts freedom (especially something used to tie down or restrain a prisoner)


shackle: a U-shaped bar; the open end can be passed through chain links and closed with a bar


shade: protective covering that protects something from direct sunlight


shade: a representation of the effect of shadows in a picture or drawing (as by shading or darker pigment)


shadow box: a shallow rectangular box with a transparent front used to protect and display small items (jewelry, coins, etc.)


shaft: a long rod or pole (especially the handle of an implement or the body of a weapon like a spear or arrow)


shaft: a long vertical passage sunk into the earth, as for a mine or tunnel


shaft: (architecture) upright consisting of the vertical part of a column


scape: (architecture) upright consisting of the vertical part of a column


shaft: a vertical passageway through a building (as for an elevator)


shag: a fabric with long coarse nap


shag rug: a rug with long pile


shaker: a container in which something can be shaken


shampoo: cleansing agent consisting of soaps or detergents used for washing the hair


shank: the narrow part of the shoe connecting the heel and the wide part of the sole


waist: the narrow part of the shoe connecting the heel and the wide part of the sole


shank: cylinder forming the part of a bit by which it is held in the drill


shank: cylinder forming the part of a bolt between the thread and the head


shank: cylinder forming a long narrow part of something


stem: cylinder forming a long narrow part of something


shantung: a heavy silk fabric with a rough surface (or a cotton imitation)


shaper: a machine tool for shaping metal or wood


shaping machine: a machine tool for shaping metal or wood


shaping tool: a tool for shaping metal


shard: a broken piece of a brittle artifact


sherd: a broken piece of a brittle artifact


fragment: a broken piece of a brittle artifact


sharkskin: a smooth crisp fabric


sharp: a long thin sewing needle with a sharp point


sharpener: any implement that is used to make something (an edge or a point) sharper


sharpie: a shallow-draft sailboat with a sharp prow, flat bottom, and triangular sail; formerly used along the northern Atlantic coast of the United States


Sharpie: a pen with indelible ink that will write on any surface


sharpshooter: a fast schooner once used by New England fisherman for illegal fishing in Canadian waters