WAIN Meaning of WAIN in English ~ 1■ noun archaic a wagon or cart.OriginOE wæg(e)n , of Gmc origin; related to way and weigh 1 . ———————— ~ 2■ noun variant form of wean 2 . Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004