smash-up
US /ˈsmæʃ.ʌp/
UK /ˈsmæʃ.ʌp/

1.
accident, carambolage
a violent collision, especially of vehicles
:
•
There was a terrible smash-up on the highway this morning.
Il y a eu un terrible accident sur l'autoroute ce matin.
•
The police are investigating the cause of the fatal smash-up.
La police enquête sur la cause du carambolage mortel.