(1):

(n. sing. & pl.) The natives or inhabitants of Ireland, esp. the Celtic natives or their descendants.

(2):

(n. sing. & pl.) An old game resembling backgammon.

(3):

(a.) Of or pertaining to Ireland or to its inhabitants; produced in Ireland.

(4):

(n. sing. & pl.) The language of the Irish; the Hiberno-Celtic.