Definition of guardian noun from the Oxford Advanced American Dictionary

     

    guardian

     noun
    noun
    NAmE//ˈɡɑrdiən//
     
     
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  1. 1a person who protects something synonym custodian Farmers should be guardians of the countryside. The police are guardians of law and order.
  2. 2a person who is legally responsible for the care of another person, especially a child whose parents have died
See the Oxford Advanced Learner's Dictionary entry: guardian