D defs.my
Entry 4 senses · 4 variants Webster, 1913

Fay

/(fā)/ · IPA /feɪ/
01 n. A fairy; an elf.
  1. 1.
    A fairy; an elf.
02 n. Faith; as, by my fay.
  1. 1.
    Faith; as, by my fay.[Obs.]
03 v. t. To fit; to join; to unite closely, as two pieces of wood, so as to make the surface fit together.
imp. & p. p. fayed; p. pr. & vb. n. Faying
  1. 1.
    To fit; to join; to unite closely, as two pieces of wood, so as to make the surface fit together.(Shipbuilding)
04 v. i. To lie close together; to fit; to fadge; -- often with in, into, with, or together.
  1. 1.
    To lie close together; to fit; to fadge; -- often with in, into, with, or together.(Shipbuilding)
Phrases & compounds
Faying surface — that surface of an object which comes with another object to which it is fastened; -- said of plates, angle irons, etc., that are riveted together in shipwork.