Entry 1 sense Webster, 1913 Irish American · I·rish A·mer·i·can · IPA /ˈaɪəɹɪʃ əˈmɛɹ.ɪ.kən/ 01 A native of Ireland who has become an American citizen; also, a child or descendant of such a person. 1. A native of Ireland who has become an American citizen; also, a child or descendant of such a person.