GOVERNOR

noun Date: 14th century one that governs: as, one that exercises authority especially over an area or group, an official elected or appointed to act as ruler, chief executive, or nominal head of a political unit, commanding officer , the managing director and usually the principal officer of an institution or organization, a member of a group that directs or controls an institution or society, tutor , 3. one looked upon as governing, mister , sir , 4. an attachment to a machine (as a gasoline engine) for automatic control or limitation of speed, a device giving automatic control (as of pressure or temperature), ~ate noun