fly1 Pronunciation: /flaɪ/Translate fly | into French | into German | into Italian Spanish translation of flyn (pl flies) 1 (insect) mosca (f) 2 (on trousers) (often pl in BrE) bragueta (f) marrueco (m) (Chi) fly in other Oxford dictionaries Definition of fly in the British & World English dictionary Definition of fly in the US English dictionary