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English definition of “captain”

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captain

noun [C]  /ˈkæp·tən/ us  
a naval officer of high rank, above a commander , or a military officer of middle rank, above a lieutenant A captain is the person in charge of a ship or aircraft. A captain is also an officer in a police or fire department. A captain is also the leader of a sports team.
captain
verb [T]  /ˈkæp·tən/ us  
She captains the women’s rowing team.
(Definition of captain from the Cambridge Academic Content Dictionary © Cambridge University Press)
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