Clapping Hands
Noun and する verb
はくしゅ
舞台が終わった後、拍手が鳴り止まなかった。
After the scene ended, the applause did not stop roaring.
Hands beating together is actually applause. Though... you might be doing it wrong if you're actually beating them together.
This is a jukugo word that uses the on'yomi readings of the kanji. You should be able to read this on your own.