guru gu‧ru [ˈgʊruː] noun [countable] informal
fashion/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 advice:
• Management gurus have looked at world-class firms in the hope of finding the magic formula for success.
• a computer-science guru
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guru UK US /ˈguːruː/ noun [C] INFORMAL MANAGEMENT
► a person skilled in something who gives advice about it: »
an investment/management guru
»a business/advertising/internet guru
Financial and business terms. 2012.