Definition of bust noun from the Oxford Advanced American Dictionary
bust
noun
/bʌst/
1(informal) an unexpected visit made by the police in order to arrest people for doing something illegala drug bust2(used especially when talking about clothes or measurements) a woman's breasts or the measurement around the breasts and backThe dress was too big in the bust.exercises to tone the bust3a stone or metal model of a person's head, shoulders, and chesta marble bust of Napoleon4a thing that is not goodAs a show it was a bust.