clapper

noun

1. a person who applauds.
2. the tongue of a bell.
3. Slang. the tongue.
4. Usually clappers. two flat sticks held between the fingers and struck rhythmically against each other to produce abrupt, sharp sounds.
5. Printing. a platen press.

noun

1. a person or thing that claps
2. a contrivance for producing a sound of clapping, as for scaring birds
3. Also called: tongue a small piece of metal suspended within a bell that causes it to sound when made to strike against its side
4. a slang word for tongue (def. 1)
5. go like the clappers, run like the clappers or move like the clappers British informal to move extremely fast