clapper

American Heritage® Dictionary of the English Language, Fourth Edition

1. n. One who applauds.
2. n. The tongue of a bell.
3. n. Slang The tongue of a garrulous person.
4. n. Two flat pieces of wood held between the fingers and struck together rhythmically.

Century Dictionary and Cyclopedia

1. n. Something which claps or strikes with a loud, sharp noise. Specifically— The tongue of a bell.
2. n. The cover of a clack-dish.
3. n. The piece of wood or metal which strikes the hopper of a mill.
4. n. In medieval churches, a wooden rattle used as a summons to prayers on the last three days of Holy Week, when it was customary for the church bells to remain silent. Also called clap.
5. n. A clack or windmill for frightening birds.
6. n. plural Pieces of wood or bone to be held between the fingers and struck together rhythmically; the bones.
7. n. The knocker of a door.
8. n. One who claps, especially one who applauds by clapping the hands.
9. n. A clack-valve.
10. n. plural A pair of iron plates used to hold fine steel springs while being hardened.
11. n. A plank laid across a running stream as a substitute for a bridge.
12. n. plural Warrenpales or -walls.
13. n. The tongue.
14. To clap; make a clattering noise.
15. n. See claper.
16. n. In botany, the auricle in hepatics. See auricle, 3 .

Wiktionary

1. n. An object so suspended inside a bell that it may hit the bell and cause it to ring.
2. n. A wooden mechanical device used as a scarecrow; bird-scaring rattle, a wind-rattle or a wind-clapper.

GNU Webster's 1913

1. n. A person who claps.
2. n. That which strikes or claps, as the tongue of a bell, or the piece of wood that strikes a mill hopper, etc. See Illust. of Bell.
3. n. A rabbit burrow.

WordNet 3.0

1. n. someone who applauds
2. n. metal striker that hangs inside a bell and makes a sound by hitting the side
3. n. a mobile mass of muscular tissue covered with mucous membrane and located in the oral cavity