The meaning of CRACK-UP is crash, wreck. How to use crack-up in a sentence.

Crack-Up is a 1946 American film noir starring Pat O'Brien, Claire Trevor and Herbert Marshall. It was directed by Irving Reis, who had directed many films of the Falcon franchise in the early …

Crack-Up: Directed by Irving Reis. With Pat O'Brien, Claire Trevor, Herbert Marshall, Ray Collins. Art curator George Steele experiences a train wreck...which may not have actually happened. …

CRACK UP definition: 1. to become mentally ill: 2. to suddenly laugh a lot, or to make someone suddenly laugh a lot…. Learn more.

If someone cracks up, they are under such a lot of emotional strain that they become mentally ill.

Suffer an emotional breakdown, become insane, as in He might crack up under the strain. This usage alludes to the result of cracking one's skull; from the early 1600s to crack alone was …

Definition of crack up phrasal verb in Oxford Advanced Learner's Dictionary. Meaning, pronunciation, picture, example sentences, grammar, usage notes, synonyms and more.

Jul 12, 2025 · crack up (third-person singular simple present cracks up, present participle cracking up, simple past and past participle cracked up) To laugh. (idiomatic, intransitive) To laugh …

Crack up definition: (intr) to break into pieces. See examples of CRACK UP used in a sentence.

crack up meaning, definition, what is crack up: to laugh a lot at something, or to make ...: Learn more.