Definitions for crack up
ADVERTISEMENT
Princeton's WordNet
breakdown, crack-up(verb)
a mental or physical breakdown
crack up, crack, crock up, break up, collapse(verb)
suffer a nervous breakdown
crack up(verb)
rhapsodize about
break up, crack up(verb)
laugh unrestrainedly
Kernerman English Learner's Dictionary
crack up(verb)æk
to laugh hard or make laugh hard
We were all cracking up.; You crack me up!
Wiktionary
crack up(Verb)
To laugh heartily.
crack up(Verb)
To cause to laugh heartily
crack up(Verb)
To become insane; to suffer a mental breakdown.
Citation
Use the citation below to add this definition to your bibliography:
"crack up." Definitions.net. STANDS4 LLC, 2013. Web. 24 May 2013. <http://www.definitions.net/definition/crack up>.