WAIN Meaning of WAIN in English n. archaic 1 a wagon. 2 (prec. by the) = CHARLES'S WAIN. [ OE wg(e)n, wn, f. Gmc, rel. to WAY, WEIGH(1) ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012