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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.]
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.
And that night there came on a terrific storm, with driving rain, awful claps of thunder and blinding sheets of lightning.
Then Missis Gummidge, she claps her hands like a play, and you come in.
Of the wild ones, some place their honey in hollow trees, others hide it in holes in the ground, which they cover so carefully, that though they are commonly in the highway, they are seldom found, unless by the moroc's help, which, when he has discovered any honey, repairs immediately to the road side, and when he sees a traveller, sings, and claps his wings, making many motions to invite him to follow him, and when he perceives him coming, flies before him from tree to tree, till he comes to the place where the bees have stored their treasure, and then begins to sing melodiously.
A terrible noise filled the air, a complex noise, made up of the howls of the crushed waves, the roaring of the wind, and the claps of thunder.
Some items intelligence appear to tickle all present amazingly; for one claps his hands in a rapture; another shouts with merriment; and a third leaps to his feet and capers about like a madman.
Immediately afterwards, he twists him into a public-house and into a parlour, where he confronts him and claps his own back against the door.
Give them a picture with a good large ruin, fancy trees, prancing nymphs, and a watery sky; dirty it down dexterously to the right pitch; put it in an old frame; call it a Claude; and the sphere of the Old Master is enlarged, the collector is delighted, the picture-dealer is enriched, and the neglected modern artist claps a joyful hand on a well-filled pocket.
The commander speaks to his bugler, who claps his instrument to his lips.
Following like thunder claps upon the Business Men's dinner, occurred event after event of terrifying moment; and I, little I, who had lived so placidly all my days in the quiet university town, found myself and my personal affairs drawn into the vortex of the great world-affairs.
The word ivory would ring in the air for a while--and on we went again into the silence, along empty reaches, round the still bends, between the high walls of our winding way, reverberating in hollow claps the ponderous beat of the stern-wheel.
He claps wings to the sides of all the solid old lumber of the world, and I am capable once more of choosing a straight path in theory and practice.