|guru (ˈɡʊruː, ˈɡuːruː)|
|1.||a Hindu or Sikh religious teacher or leader, giving personal spiritual guidance to his disciples|
|2.||derogatory often a leader or chief theoretician of a movement, esp a spiritual or religious cult|
|3.||facetious often a leading authority in a particular field: a cricketing guru|
|[C17: from Hindi gurū, from Sanskrit guruh weighty]|
In Hinduism, a teacher or spiritual leader.
Note: By extension, a “guru” is a teacher who attracts disciples or followers.