clapper

Short definition from Wiktionary

Noun

1. 1
   One who claps; a person who applauds by clapping the hands.
2. 2
   An object so suspended inside a bell that it may hit the bell and cause it to ring; a clanger or tongue.
3. 3
   A wooden mechanical device used as a scarecrow; bird-scaring rattle, a wind-rattle or a wind-clapper.
4. 4
   A clapstick (musical instrument).
5. 5
   A pounding block.
6. 6
   The chattering damsel of a mill.
7. 7
   A slapshot
8. 8
   The hinged part of a clapperboard, used to synchronise images and soundtrack, or the clapperboard itself.
9. 9
   A person's tongue.
10. 10
    A rabbit burrow.

Verb

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

Proper noun

1. 1
   A surname.