Merriam-Webster Collegiate Dictionary - fay

 I. verb  Etymology: Middle English feien, from Old English fegan; akin to Old High German fuogen to fit, Latin pangere to fasten — more at pact  Date: before 12th century to fit or join closely or tightly  II. noun  Etymology: Middle English fai, fei, from Anglo-French feid, fei — more at faith  Date: 13th century obsolete faith  III. noun  Etymology: Middle English faie, from Anglo-French fee — more at fairy  Date: 14th century fairy, elf  IV. adjective  Date: 14th century resembling an elf  V. noun  Date: 1927 o~