Definition of guru noun from the Oxford Advanced Learner's Dictionary

     

    guru

     noun
    noun
    BrE BrE//ˈɡʊruː//
     
    ; NAmE NAmE//ˈɡʊruː//
     
    Religious people
     
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  1. 1a Hindu or Sikh religious teacher or leader See related entries: Religious people
  2. 2(informal) a person who is an expert on a particular subject or who is very good at doing something a management/health/fashion, etc. guru Jean-Paul Sartre was the guru of post-war French philosophy. Libby Purves meets the woman who’s become the guru of children’s television. Most management gurus base their appeal on one big theme.
  3. Word Originfrom Hindi and Punjabi, from Sanskrit guru ‘weighty, grave’ (compare with Latin gravis), hence ‘elder, teacher’.
See the Oxford Advanced American Dictionary entry: guru