- 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.
- Slang.
- pain (def. 5): Organizing the family reunion was a big pain in the kazoo.
- wazoo (def. 3): We pay taxes up the kazoo, but the streets are still full of potholes and trash collection comes late.
- 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
