of Ireland, the people of Ireland, or the Celtic language of Irelandoffensive amusingly illogicalIrishman nounIrishness nounIrishwoman noun[Old English Īras Irishmen, of Celtic origin]
(treated as pl) the people of Ireland(also Irish Gaelic) the Celtic language of the people of IrelandWords from Irish Gaelic that have passed into common use in English include brogue, galore, leprechaun, shamrock, smithereens, and whiskey