n.
Pronunciation: ' st ē l- ˌ yärd, ' stil-y ə rd
Function: noun
Etymology: probably from 3 steel + 4 yard (rod)
Date: 1639
: a balance in which an object to be weighed is suspended from the shorter arm of a lever and the weight determined by moving a counterpoise along a graduated scale on the longer arm until equilibrium is attained
steelyard