governor
gov.er.nor \'g*v-(*-)n*r also 'g*v-*r-n*r\ n 1: one that governs : as 1a: one that exercises authority esp. over an area or group 1b: an official elected or appointed to act as ruler, chief executive, or n ominal head of a political unit 1c: COMMANDANT 1d: the managing director and usu. the principal officer of an institution or organization 1e: a member of a group that directs or controls an institution or society 2: TUTOR slang 3a: one looked upon as governing 3b: MISTER 4a: an automatic attachment to a machine for automatic control or limitatio n of speed 4b: a device giving automatic control (as of pressure or temperature)
Webster's English Dictionary