Yer wan

exp.

Heard in Sligo, Offaly, Kilkenny, Leitrim and Wexford

That woman. Also: Used as a noun for someone whose name you do not know.

In use

Ah bucked yer wan last night lawdz!" "Man is dat ur bird ovr der riding yer one?

Posh English

My word, I engaged in amorous congress with that mysterious lady last evening, old chaps!

Same phrase, other counties