From Longman Dictionary of Contemporary EnglishRelated topics: Hinduismgurugu‧ru /ˈɡʊruː/ noun [countable]1informalADVISE someone who knows a lot about a particular subject, and gives advice to other peoplea management gurua fashion guru2RRHa Hindureligiousteacher or leaderExamples from the Corpusguru• In walks a skinny, intense, angry little guy, obviously the bossguru.• More often, we opted for the quickfix or the solution offered by the managementguru of the month.• Peter Drucker, the management guru, has just published a new book.• a nutritionguru• But a quasi guru, given he refused to accept any such role.• Twenty-five years ago he was enthroned as the guru of the avant-garde; today he is isolated, some would say megalomaniac.• Could it be that the guru of the environmental left had been wrong?• It soon became apparent that Colin was the guru of the whole department.• The guru or the spiritualdirector will have to tell the novice when he has reached the limits of his ability.• Years ago in Manchester, my husband was taught to meditate by a Yiddishe guru in Didsbury.From Longman Business Dictionarygurugu‧ru /ˈgʊruː/ noun [countable] informalfashion/management etc guru someone who knows a lot about fashion, managing businesses etc, whom people consider to be a leader in their area and whom they go to for adviceManagement gurus have looked at world-class firms in the hope of finding the magic formula for success.a computer-science guruOriginguru(1600-1700)HindiSanskrit