Fust

n. [O. Fr. fust, N. Fr. fût, Pr. fust, Sp. & Pg. fuste, It. fusto, from Lat. fustis, stick, staff.] (Arch.) The shaft of a column, or trunk of a pilaster. Gwilt.

n. [Cf. Foist and Fiz, and O. Fr. fust, N. Fr. fût, cask, taste or smell of the cask, fustiness, sentir le fust, to taste of the cask, fusté, tasting of the cask, smelling of the vessel.] A strong, musty smell; mustiness. Johnson.

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