Definition of crack-up in English:

crack-up

Syllabification: crack-up
(also crackup)

noun

[usually in singular] informal
  • 1A collapse under strain: he had a complete mental crack-up
    More example sentences
    • Mark has had one emotional crack-up and one hospitalisation before the stresses have even begun.
    • The directorial debut shows the actress grappling with the aftermath of a crack-up.
    • By the time the reader gets to book four, Donny's been ‘hospitalized for a crack-up.’
  • 2An act of breaking up or splitting apart: the crack-up of a political system
    More example sentences
    • It would lead to the crack-up boom and the breakdown of the whole monetary system.
    • Any bump in the road is greeted not just as evidence of the crack-up, but as its beginning.
    • The later the crack-up comes, the longer the period in which the calculation is misguided by fiduciary media.
  • 3A car crash: motorists were asked to report minor crack-ups later

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Pronunciation: ˌkələrəˈto͝orə
noun
elaborate ornamentation of a vocal melody