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clap 1

v. clapped, clap·ping, claps
1. To strike the palms of the hands together with a sudden explosive sound, as in applauding.
2. To come together suddenly with a sharp sound.
1. To strike together with a sharp sound, as one hard surface on another: clapped a book on the desk.
2. To strike (the hands) together with an abrupt, loud sound, usually repeatedly: clapped hands in time to the music.
3. To strike lightly but firmly with the open hand, as in greeting: clapped me on the shoulder.
4. To put or place quickly and firmly: clapped the purse snatcher in jail; clapped a lid on the box.
5. To arrange hastily: clapped together a plan.
1. The act or sound of clapping the hands.
2. A sudden, loud, explosive sound: a clap of thunder.
3. A sharp blow with the open hand; a slap.
4. Obsolete A sudden stroke of fortune, especially of bad luck.

[Middle English clappen, from Old English clæppan, clappian, to throb, and from Old Norse klappa, to clap, pat.]

clap 2

n. Vulgar Slang
Gonorrhea. Often used with the.

[Probably from obsolete French clapoir, bubo, from Old French clapier, brothel, from Old Provençal, rabbit warren, from clap, heap of stones, perhaps of Celtic origin.]
American Heritage® Dictionary of the English Language, Fifth Edition. Copyright © 2016 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
References in classic literature ?
A belaying pin is found too large to be easily inserted into its hole: the carpenter claps it into one of his ever-ready vices, and straightway files it smaller.
'But bless ye, my beauty!' cried Mrs Boflin, taking him up short at this point, with another hearty clap of her hands.
A sudden clap of thunder is heard, and as peal follows peal, Oedipus is aware that his hour is come and bids Antigone summon Theseus.
"If you believe," he shouted to them, "clap your hands; don't let Tink die."
Pollyanna began to clap her hands; but even as she brought her small palms together the first time, she stopped, and held them suspended.
'Arabian Night, certainly,' thought Mr Swiveller; 'they always clap their hands instead of ringing the bell.
The words were hardly uttered before a flash of lightning, followed instantly by a tremendously heavy clap of thunder, nearly stupified them both.
"I think most men would have done as I did, at so heavy and so sudden a clap of thunder, and so very near too," said Charles, striving to conceal the uneasiness he felt.
you ran from another clap," said Julia, laughing till her dark eyes flashed with pleasure, and shaking her head until her glossy hair fell in ringlets over her shoulders; "you will never make a hero, Charles."
Only think, my dear, poor Charles Weston was frightened by a clap of thunder--but Charles has an excellent heart."
However, members who still have outstanding loans under the SSS' Loan Restructuring Program, previous Claps, and those who are receiving total permanent disability or retirement pensions are not qualified to avail of said loan program.