The Collaborative International Dictionary
Fay \Fay\ (f[=a]), v. t. [imp. & p. p. fayed; p. pr. & vb. n. Faying.] [OE. feien, v.t. & i., AS. f[=e]gan to join, unite; akin to OS. f[=o]gian, D. voegen, OHG. fuogen, G. f["u]gen, Sw. fog
See Fair, and cf. Fadge.] (Shipbuilding) To fit; to join; to unite closely, as two pieces of wood, so as to make the surface fit together.
Wiktionary
vb. (present participle of fay English)
Wikipedia
Usage examples of "faying".
Are ye faying to work her into the grave with yer blasted demands both night and day?
That evening and the next day the launch began to take shape again, and on the Wednesday it was fairly covered with men fitting, joining, faying, rasping and hammering under their Captain's immediate eye, for by now the victualling, such as it was, had been completed: net after net of coconuts stood ready to be loaded.