Meaning of AVOIRDUPOIS in English

AVOIRDUPOIS

[av.oir.du.pois] n [ME avoir de pois goods sold by weight, fr. OF, lit., goods of weight] (15c) 1: avoirdupois weight

2: weight, heaviness; esp: personal weight

[2]avoirdupois adj (1755): expressed in avoirdupois weight "one ounce ~"

Merriam-Webster English vocab.      Английский словарь Merriam Webster.