Aontroim

== Irish == === Etymology === From Old Irish óen (“single, lone, one”) + troim (“back, spine, ridge”). === Proper noun === Aontroim f (genitive Aontroma) Antrim (a town in County Antrim, Northern Ireland) Antrim (a county of Northern Ireland) Synonym: Contae Aontroma === Mutation === === Further reading === Hayward, Richard (2015): Ulster and the City of Belfast, p. 39