Definition of salvo noun from the Oxford Advanced American Dictionary

     

    salvo

     noun
    noun
    NAmE//ˈsælvoʊ//
     
    (pl. salvos, (or )salvoes)
     
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  1. 1the act of firing several guns or dropping several bombs, etc. at the same time; a sudden attack The first salvo exploded a short distance away.
  2. 2(figurative) The newspaper article was the opening salvo in what proved to be a long battle.
See the Oxford Advanced Learner's Dictionary entry: salvo