governor n: one that governs: as
a : one that exercises authority esp. over an area or group
b : an official elected or appointed to act as ruler, chief executive, or nominal head of a political unit
: 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 ]
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.