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Definition of captain noun from the Oxford Advanced American Dictionary

Oxford3000

captain

noun
/ˈkæptən/ captain pronunciation American
 
1 the person in charge of a ship or commercial aircraftCaptain CookThe captain gave the order to abandon ship.Captain Jones and her copilot2 an officer of fairly high rank in the navy, the army, and the U.S. air forceCaptain Lance Price3 the leader of a group of people, especially a sports teamShe was captain of the hockey team at school.He has just been made team captain.4 an officer of high rank in a U.S. police or fire department