American English

Definition of self-defense noun from the Oxford Advanced American Dictionary

     

    self-defense

     noun
    noun
     
    [uncountable]
     
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  1. 1something you say or do in order to protect yourself when you are being attacked, criticized, etc. The man later told police that he was acting in self-defense.
  2. 2the skill of being able to protect yourself from physical attack without using weapons I'm taking classes in self-defense.