ARIL Meaning of ARIL in English n. Bot. an extra seed-covering, often coloured and hairy or fleshy, e.g. the red fleshy cup around a yew seed. arillate adj.[ mod.L arillus: cf. med.L arilli dried grape-stones ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012