1. a simple musical instrument consisting of a tube with a membrane that vibrates when you hum into it

Examples

• The children played kazoos during the parade.
• She hummed into the kazoo to make a buzzing sound.
• The marching band included several kazoo players.
• He bought a plastic kazoo at the toy store.
• The kazoo produces sound when air vibrates the membrane.
• They formed a kazoo orchestra for the school talent show.