Definition of bust out phrasal verb from the Oxford Advanced American Dictionary

 

bust out

 phrasal verb
phrasal verb
 
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Phrasal Verbs

    bust out

    (informal)
     
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  1. 1to escape from a place such as a prison He busted out of reform school at 16.
  2. 2to begin doing something suddenly bust out doing something We busted out laughing at his silly joke.