What does crack up mean?

Looking for the meaning or definition of the word crack up? Here's what it means.

Verb (idiomatic, intransitive) To laugh heartily. (idiomatic, transitive) To cause to laugh heartily. (intransitive, idiomatic) To become insane; to suffer a mental breakdown. (transitive, informal, now usually passive) To cry up; to extol. Find more words! 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To economise energy in case of intense heat, the classical air-conditioners can crack up because of excessive expenses on the spool of the capacitor. Everyone at TP1 knows that if you're looking for someone to crack up at your jokes, you come see us-the women in the design department. My pillow was my bag, and I had ingeniously propped a board between a traffic cone with a crack up the side, and a milk crate. It was often, during this final exchange, that all of the game's energy would become focused on two men, then inevitably one of the two would crack up. All it takes is for one person to crack up and we all collapse. See Also What is another word for crack up? What is the opposite of crack up? Sentences with the word crack up Words that rhyme with crack up What is the past tense of crack up? Nearby Definitions crackup cracktros cracktro crack trains crack train crack through crackups crack willow crack willows crack wise cracky cracky wagon