1 Collagen is most commonly found within the body in the skin, bones and connective tissues. 2  The word collagen is derived from the Greek kolla, meaning glue.  Collagen gives the skin its strength and structure, and also plays a role in the replacement of dead skin cells.
sieve A sieve is a mesh strainer used to separate lumps and clumps from the fine material. Sieves are handy for everything from sifting flour to prospecting for gold â anything where you need to separate the big from the small. If youâre an archaeologist, you've probably used various sorts of sifters and shakers to sieve through the soil to recover even the tiniest artifacts.
sieve (sÉªv) n. 1. (Tools) a device for separating lumps from powdered material, straining liquids, grading particles, etc, consisting of a container with a mesh or perforated bottom through which the material is shaken or poured. 2. rare a person who gossips and spreads secrets. 3. memory like a sieve head like a sieve a very poor memory. vb. 4. to pass or cause to pass through a sieve. 5. (often foll by: out) to separate or remove (lumps, materials, etc) by use of a sieve [Old English sife; related to Old Norse sef reed with hollow stalk, Old High German sib sieve, Dutch zeef] ËsieveËlike adj. sieve (sÉªv) n., v. sieved, sievâ¢ing. n. 1.