Shim

[ʃɪm]

(noun.) a thin wedge of material (wood or metal or stone) for driving into crevices.

Edited by Hugh--From WordNet

(n.) A kind of shallow plow used in tillage to break the ground, and clear it of weeds.

(n.) A thin piece of metal placed between two parts to make a fit.

Inputed by Artie

n. (mach.) a thin slip used to fill up space caused by wear.—v.t. to wedge up.

Checker: Vivian