Definitions for: Fust

Webster (1913) Definition: Fust, n. [OF. fust cask, F. f?t cask, taste or smell of
the caak, fustiness, cf. sentir le f?t to taste of the cask.
See 1st Fust.]
A strong, musty smell; mustiness.

Fust, v. i.
To become moldy; to smell ill. [Obs.]