1. smash up - Noun
2. smash up - Verb
damage or destroy as if by violence
a serious collision (especially of motor vehicles)
Source: WordNetsmash-up
The teenager banged up the car of his mother Source: Internet
The Luddites – bands of desperate men put out of work by new machines and reduced to starvation – have conspired to smash up the Mill and terrorise its. Source: Internet
Then smash up some Ritz crackers and mix with melted butter, put that on top. Source: Internet