KAGU Meaning of KAGU in English [ 'kα:gu: ]■ noun a crested, almost flightless bluish-grey bird found only on the Pacific island of New Caledonia. [ Rhynochetos jubatus .]OriginC19: from Melanesian. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004