crack up

1. To laugh.

   (idiomatic, intransitive)To laugh heartily.

   It was hilarious. We were cracking up the whole time.

   in Lachen / Gelächter ausbrechen, kaputtlachen, schlapplachen

   ло́паться от сме́хаlópatʹsja ot sméxa, ло́пнуть от сме́хаlópnutʹ ot sméxa

   laugh unrestrainedly

2. (idiomatic, transitive)To cause to laugh heartily.

   The joke about the nuns in the bath cracked me up.

   zum Lachen bringen

3. (intransitive, slang)To tease (someone) or tell jokes at the expense of (someone).

   He's always cracking up at me about that.

4. To break.

   (dated, idiomatic, intransitive)To become insane; to suffer a mental breakdown.

   She got through the war, but cracked up when her sister died.

   den Verstand verlieren, durchdrehen, überschnappen

   suffer a nervous breakdown

5. (idiomatic)To break down or fall apart; to stop functioning; to shatter.

   The university was really cracking up, losing faculty, students and donors, and it seemed like to go under.

   My motorcycle cracked up before I arrived.

6. (idiomatic, transitive)To separate a group.

   I have to crack up that little clique.

7. (US)To crash an aircraft or automobile.

8. (transitive)To remove the shell from nuts.

   We can send you a hundred pounds a month of pecans to crack up.

9. (transitive)To crack (petroleum). (to break down (a complex molecule), especially with the application of heat: to pyrolyse)

   The refinery cracks up the heavier oils.

10. To affect the image of something.

    (slang, transitive)To praise or applaud (something); to promote a positive view of (something).

    She wasn't as impressive as Katie cracked her up.

11. (dated, transitive)To insult, demean or harm the image of (something).

    Those who have been cracking up the agricultural industry will hopefully reconsider their denigration of it.

12. (informal, transitive)To cry up; to extol.

    This new computer system is not what it was cracked up to be.

1. You crack me up, Tom.

   ruТы меня смешишь, Том. — Ooneykcall

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2. Tom started to crack up.

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3. Tom and Mary were cracking up.

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4. It ain't all it's cracked up to be.

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5. That hotel isn't all it's cracked up to be.

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irregular

• crack upруйнуватися, розпадатисяTo laugh heartily.
• crack outвтікти, спалахуватиTo show signs or symptoms of excessive crack cocaine use.
• crack offTo shoot a gun.
• crack onTo continue (at a task) briskly or promptly.
• crack downTo take harsh action (against), as when enforcing a law or rule more stringently than before.
• crack throughTo penetrate
• crack alongTo move quickly; to continue with work briskly.