JAIN Meaning of JAIN in English n. & adj.n. an adherent of a non-Brahminical Indian religion. adj. of or relating to this religion. Jainism n. Jainist n.[ Hindi f. Skr. jainas saint, victor f. jina victorious ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012