Definition of "Captain" :

noun: a dining-room attendant who is in charge of the waiters and the seating of customers

noun: the pilot in charge of an airship

noun: the naval officer in command of a military ship

noun: a policeman in charge of a precinct

noun: an officer holding a rank below a major but above a lieutenant

noun: the leader of a group of people

"A captain of industry."

noun: an officer who is licensed to command a merchant ship

verb: be the captain of a sports team