[Irish] n [ME, fr. (assumed) OE Irisc, fr. Iras Irishmen, of Celt origin; akin to OIr Eriu Ireland] (13c) 1 pl in constr: natives or inhabitants of Ireland or their descendants esp. when of Celtic speech or culture
2. a: the Celtic language of Ireland esp. as used since the later medieval period b: English spoken by the Irish
3: irish whiskey -- Irish adj