Cork UK /kɔːk/US /kɔɹk/noun 2phrases 4 noun2 •The principal city of County Cork, Ireland. •A county in the Republic of Ireland (County Cork). Phrases with Cork cork offTo fall asleep. cork outTo hit the ball, especially powerfully, with a particular result. cork upTo enclose in a bottle sealed with a cork. pop one's corkTo become explosively angry.