[steel.yard] n [prob. fr. [3]steel + [4]yard (rod)] (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
Meaning of STEELYARD in English
Merriam-Webster English vocab. Английский словарь Merriam Webster. 2012