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n. pl. ka·zoos
A simple musical instrument consisting of a metal or plastic tube with a single hole covered by a thin membrane that produces a buzzing sound when the player hums or sings into the mouthpiece.
[Perhaps imitative of its sound.]
n, pl -zoos
(Instruments) a cigar-shaped musical instrument of metal or plastic with a membranous diaphragm of thin paper that vibrates with a nasal sound when the player hums into it
[C20: probably imitative of the sound produced]
n., pl. -zoos.
a musical toy consisting of a tube that is open at both ends and has a hole in the side covered with parchment or membrane, which produces a buzzing sound when the performer hums into one end.
kazoo, bazooka - Dutch bazu, "trumpet," gives us the words kazoo and bazooka, the latter originally being a form of kazoo that was a long sounding-horn.
See also related terms for trumpet.