(software, testing) A testing methodology in which random data (“fuzz”) is supplied as input to a program.

(computing) Any test that uses the fuzz testing methodology.

(transitive) to censor (an image) by blurring.

plural of fuzz box

An effects pedal comprising an amplifier and a clipping circuit, used in music to generate a distorted version of the input signal.

(literally) The fibrous material covering the skin of a peach fruit, e.g. as opposed to the fuzzless skin of a nectarine. / (figuratively) Lightly or sparsely grown hair, especially facial hair.