(uncountable) The Gaelic language indigenous to Ireland, also known as Irish Gaelic.

(as plural) The Irish people.

(uncountable, US) Temper; anger, passion.

(countable, uncountable) Whiskey, or whisky, elaborated in Ireland.

Pertaining to or originating from Ireland or the Irish people.

Pertaining to the Irish language.

(derogatory) nonsensical, daft or complex.