clapper

1. One who claps; a person who applauds by clapping the hands.
2. An object so suspended inside a bell that it may hit the bell and cause it to ring; a clanger or tongue.
3. A wooden mechanical device used as a scarecrow; bird-scaring rattle, a wind-rattle or a wind-clapper.
4. A clapstick (musical instrument).
5. A pounding block.
6. The chattering damsel of a mill.
7. A slapshot
8. The hinged part of a clapperboard, used to synchronise images and soundtrack, or the clapperboard itself.
9. A person's tongue, as a source of chatter or nagging.

1. To ring a bell by pulling a rope attached to the clapper.
2. To make a repetitive clapping sound; to clatter.
3. Of birds, to repeatedly strike the mandibles together.

noun

A rabbit burrow.