Captain(n.)
- The military officer who commands a company, troop, or battery, or who has the rank entitling him to do so though he may be employed on other service.
Captain(n.)
- An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army.
Captain(n.)
- By courtesy, an officer actually commanding a vessel, although not having the rank of captain.
Captain(n.)
- The master or commanding officer of a merchant vessel.
Captain(n.)
- One in charge of a portion of a ship's company; as, a captain of a top, captain of a gun, etc.