Sinn Fein - an Irish republican political movement founded in 1905 to promote independence from England and unification of Ireland; became the political branch of the Irish Republican Army

foreign terrorist organization, FTO, terrorist group, terrorist organization - a political movement that uses terror as a weapon to achieve its goals

Eire, Ireland, Irish Free State - a republic consisting of 26 of 32 counties comprising the island of Ireland; achieved independence from the United Kingdom in 1921