Definify.com

Webster 1913 Edition

Noun.

[From the

Finians

Fenii

, the old militia of Ireland, who were so called from

Fin

Finn

Fionn

, or

Fingal

, a popular hero of Irish traditional history.]

A member of a secret organization, consisting mainly of Irishmen, having for its aim the overthrow of English rule in Ireland.

Adj.

Pertaining to Fenians or to Fenianism.

Fenian ‎(plural Fenians)

(Britain, Ireland) An Irish nationalist or republican.
(historical) A member of the Fenian Brotherhood or the Irish Republican Brotherhood, Irish republican organizations active in the nineteenth and early twentieth centuries.
(derogatory, Scotland and Northern Ireland) A Catholic, especially one of Irish ethnicity or descent.
(derogatory, Scotland and Northern Ireland) A supporter of Scottish association football club Celtic F.C.