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Punch line

//ˈpʌntʃˌlaɪn// noun

Noun

1
The final part of a joke; the word, sentence, or exchange of sentences that is intended to be funny and provokes laughter from the listeners.
"That was quite a build-up for such a puny punch line."
2
the point of a joke or humorous story wordnet
3
The butt of a joke; laughing stock. broadly
"The women are a phenomenon; the men are a punchline."
4
A final, concluding statement that an explanation has been leading up to; a conclusion. broadly
"The final, the Munich-based liberal newspaper writes, was a “fitting punchline” to a great tournament."

1910s, probably American. It was probably meant to be likened to a quick, sharp punch.

Unscramble this word: punchline