Collins COBUILD Advanced Learner's English Dictionary - smash up

1. If you smash something up, you completely destroy it by hitting it and breaking it into many pieces. She took revenge on her ex-boyfriend by smashing up his home... You could smash the drawer up with a hammer... PHRASAL VERB: V P n (not pron), V n P 2. If you smash up your car, you damage it by crashing it into something. All you told me was that he’d smashed up yet another car. PHRASAL VERB: V P n (not pron)