Definition of bash noun from the Oxford Advanced American Dictionary

     

    bash

     noun
    noun
    NAmE//bæʃ//
     
    (informal)
     
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  1. 1 a large party or celebration a birthday bash She gave a big 40th birthday bash for her husband. a Fourth of July bash for 1,500 guests
  2. 2 a hard hit He gave Mike a bash in the nose.
See the Oxford Advanced Learner's Dictionary entry: bash