fenian

Of or relating to roving bands of hunter-warriors in ancient Ireland, especially the band led by the hero Fionn mac Cumhaill in Irish mythology; (generally) of or relating to the people of ancient Ireland.

Of or relating to organizations opposing British rule in Ireland, especially the Fenian Brotherhood and Irish Republican Brotherhood which were active in the late 19th and early 20th centuries.

Of or relating to a Roman Catholic, chiefly one of Irish descent or ethnicity.

Of or relating to the Scottish association football club Celtic Football Club.

A member of a roving band of hunter-warriors in ancient Ireland, especially the band led by the hero Fionn mac Cumhaill in Irish mythology; (generally) a person of ancient Ireland.

Do you compare your psalms / To the tales of the bare-arm'd Fenians?

A member of an organization opposing British rule in Ireland, especially the Fenian Brotherhood and Irish Republican Brotherhood which were active in the late 19th and early 20th centuries; (generally) an Irish nationalist or republican.

A Roman Catholic person, chiefly one of Irish descent or ethnicity.

It was sound advice for anyone visiting Northern Ireland in 1999 and remains so today: do not refer to Protestants as "Prods", or to Catholics as "Fenians" or "Taigs", and whatever you do don't refer to your visit as "being out here".

A supporter of the Scottish association football club Celtic Football Club.