kazoo
/kəˈzuː/noun
- a small, simple musical instrument consisting of a hollow pipe with a hole in it, over which is a thin covering that vibrates and adds a buzzing sound when the player sings or hums into the pipe卡祖笛（一种由单孔中空管组成的小而简单的乐器, 吹奏者向吹口处哼唱时, 乐器上的薄膜会颤动并发出嗡嗡的伴音）。
词源
late 19th cent.: apparently imitative of the sound produced.