governor
noun | \ ˈgə-vər-nər \ | gov·er·nor
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a : one that exercises authority especially over an area or group
b : an official elected or appointed to act as ruler, chief executive, or nominal head of a political unit; specifically : the chief executive of a U.S. state : the chief executive of a U.S. state
c : the managing director and usually the principal officer of an institution or organization
d : a member of a group that controls or directs an institution the Federal Reserve System's Board of Governors