crack–up

crack–up /ˈkrækˌʌp/ noun
plural crack–ups
crack–up
/ˈkrækˌʌp/
noun
plural crack–ups
Britannica Dictionary definition of CRACK–UP
[count] US, informal
1 
: an accident in which a vehicle is badly damaged
2 
: nervous breakdown
— see also crack up at 1crack