GOIDELIC Meaning of GOIDELIC in English [ gɔɪ'dɛlɪk ]■ noun the northern group of Celtic languages, including Irish, Scottish Gaelic, and Manx. Compare with Brythonic . ■ adjective relating to or denoting ~. Concise Oxford English vocab. Сжатый оксфордский словарь английского языка. 2004