Mediterranean Irish adjective 1noun 2 adjective1 •Of or pertaining to such people.My dear deceased mama used to say to me when I was young and cried b/c I was all Italian. . . "You're Mediterranean Irish and that's good enough" on St. Pat's day! — 2007 noun2 •(UK) The Ionian Islanders. •(US) Synonym of Italian, an inhabitant of Italy or person of Italian descent.His name is I. J. Saccamanno. He is a Mediterranean "Irish" and I love him like a brother. — 1959