kazoo

A toy musical instrument with a membrane that produces a buzzing sound when a player hums or sings into the mouthpiece.

A so-called musical instrument or toy, consisting of a wooden tube of peculiar shape, containing a vibrating strip of catgut.

A kind of toy or rude musical instrument, as a tube inside of which is a stretched string or membrane made to vibrate by singing or humming into the tube.

a simple musical instrument consisting of a pipe with a hole in it, producing a buzzing sound when the player hums into it.

to play the kazoo.

a toy wind instrument that has a membrane that makes a sound when you hum into the mouthpiece