- 1(informal) an unexpected visit made by the police in order to arrest people for doing something illegal a drug bust
- 2 (used especially when talking about clothes or measurements) a woman's breasts or the measurement around the breasts and back The dress was too big in the bust. exercises to tone the bust
- 3 a stone or metal model of a person's head, shoulders, and chest a marble bust of Napoleon
- 4 a thing that is not good As a show it was a bust.