Definition of break off phrasal verb from the Oxford Advanced Learner's Dictionary

  

break off

 phrasal verb
phrasal verb
 
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Phrasal Verbs
  1. 1  to become separated from something as a result of force The back section of the plane had broken off.
  2. 2to stop speaking or stop doing something for a time He broke off in the middle of a sentence.
  1. 1  to separate something, using force She broke off a piece of chocolate and gave it to me.
  2. 2  to end something suddenly Britain threatened to break off diplomatic relations. They've broken off their engagement.
See the Oxford Advanced American Dictionary entry: break off