FAY Meaning of FAY in English fay /feɪ/ BrE AmE noun [countable] literary [ Date: 1300-1400 ; Language: Old French ; Origin: fae ; ⇨ ↑ fairy ] a ↑ fairy (1) – used especially in poetry Longman Dictionary of Contemporary English. Longman - Словарь современного английского языка. 2012