punch line

American  

noun

1. the climactic phrase or sentence in a joke, speech, advertisement, or humorous story that produces the desired effect.

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punch line British  

noun

1. the culminating part of a joke, funny story, etc, that gives it its humorous or dramatic point

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Etymology

Origin of punch line

An Americanism dating back to 1920–25

Example Sentences

Chinese culture may be of genuine interest to many users, but online, it’s destined to become an exotic punch line.

From Slate • Mar. 13, 2026

“The end,” Feghali delivered her punch line as she read the story for a smaller group a while later.

From Los Angeles Times • Jul. 16, 2025

I’m a Jersey-born Muslim, same as Youssef, and I was wedged in Row N next to an auntie who looked primed to eye-roll any haram punch line.

From Slate • Jun. 30, 2025

Just don’t have Palmer play Jar Jar Binks’ father’s brother’s nephew’s cousin’s former roommate, please, because Dark Helmet already spent that punch line on Lone Starr back in 1987.

From Los Angeles Times • Jun. 13, 2025

Buddy Stein: I pictured him telling scandalous jokes, cracking his knuckles when he got to the punch line.

From "The Brightwood Code" by Monica Hesse