Meaning of “captain” - Learner’s Dictionary

captain

noun [ C ] uk us /ˈkæptɪn/
SHIP

B2 the person in control of a ship or aircraft

ARMY

an officer of middle rank in the army, navy, or air force

SPORT

B1 the leader of a team

(Definition of “captain noun” from the Cambridge Learner’s Dictionary © Cambridge University Press)