Definition of sanctum noun from the Oxford Advanced American Dictionary

     

    sanctum

     noun
    noun
    NAmE//ˈsæŋktəm//
     
    [usually singular](formal)
     
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  1. 1a private room where someone can go and not be disturbed She once allowed me into her inner sanctum.
  2. 2a holy place
See the Oxford Advanced Learner's Dictionary entry: sanctum