[ klap-er ]
/ ˈklæp ər /
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a person who applauds.
the tongue of a bell.
Slang. the tongue.
Usually clappers. two flat sticks held between the fingers and struck rhythmically against each other to produce abrupt, sharp sounds.
Printing. a platen press.
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Origin of clapper

First recorded in 1250–1300, clapper is from the Middle English word claper.See clap1, -er1
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2022

How to use clapper in a sentence

British Dictionary definitions for clapper

/ (ˈklæpə) /

a person or thing that claps
a contrivance for producing a sound of clapping, as for scaring birds
Also called: tongue a small piece of metal suspended within a bell that causes it to sound when made to strike against its side
a slang word for tongue (def. 1)
go like the clappers, run like the clappers or move like the clappers British informal to move extremely fast
Collins English Dictionary - Complete & Unabridged 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012