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

 

blow out

 phrasal verb
phrasal verb
 
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Phrasal Verbs
  1. 1if a flame, etc. blows out, it is put out by the wind, etc. Somebody opened the door and the candle blew out.
  2. 2if an oil or gas well blows out, it sends out gas suddenly and with force related noun blowout

blow somebodyout

(informal)
 
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to defeat someone easily

blow somethingout

 
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to put out a flame, etc. by blowing
See the Oxford Advanced Learner's Dictionary entry: blow out