Nouns

(n)captainan officer holding a rank below a major but above a lieutenant
(n)captain, skipperthe naval officer in command of a military ship
(n)captain, police captain, police chiefa policeman in charge of a precinct
(n)master, captain, sea captain, skipperan officer who is licensed to command a merchant ship
(n)captain, chieftainthe leader of a group of people“a captain of industry”
(n)captain, senior pilotthe pilot in charge of an airship
(n)captain, headwaiter, maitre d'hotel, maitre d'a dining-room attendant who is in charge of the waiters and the seating of customers

Verbs

(v)captainbe the captain of a sports team