[ krak-uhp ]
/ ˈkrækˌʌp /
a crash; collision.
a breakdown in health, especially a mental breakdown.
collapse or disintegration: the crackup of an alliance.
Origin of crackup
First recorded in 1850–55; noun use of verb phrase crack up
Dictionary.com Unabridged Based on the Random House Unabridged Dictionary, © Random House, Inc. 2019