IBEX Meaning of IBEX in English [ 'ʌɪbɛks ]■ noun ( plural ~es ) a wild mountain goat with long, thick ridged horns and a beard. [ Capra ~ (Eurasia and NE Africa), and C. pyrenaica (Pyrenees).]OriginC17: from L. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004