Fuzz \Fuzz\, n. [Cf. Prov. E. fuzzy that ravels (of silk or cotton), D. voos spongy, fungous, G. faser filament. E. feaze to untwist.] Fine, light particles or fibers; loose, volatile matter. {Fuzz ball}, a kind of fungus or mushroom, which, when pressed, bursts and scatters a fine dust; a puffball.