CAVERN Meaning of CAVERN in English n. 1 a cave, esp. a large or dark one. 2 a dark cavelike place, e.g. a room. cavernous adj. cavernously adv.[ ME f. OF caverne or f. L caverna f. cavus hollow ] Concise Oxford English dictionary. Краткий оксфордский словарь английского языка. 2012