Cap·tain n.
 1. A head, or chief officer; as: (a) 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. (b) An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army. (c) By courtesy, an officer actually commanding a vessel, although not having the rank of captain. (d) The master or commanding officer of a merchant vessel. (e) One in charge of a portion of a ship's company; as, a captain of a top, captain of a gun, etc. (f) The foreman of a body of workmen. (g) A person having authority over others acting in concert; as, the captain of a boat's crew; the captain of a football team.
    A trainband captain eke was he.   --Cowper.
    The Rhodian captain, relying on . . . the lightness of his vessel, passed, in open day, through all the guards.   --Arbuthnot.
 2. A military leader; a warrior.
    Foremost captain of his time.   --Tennyson.
 Captain general. (a) The commander in chief of an army or armies, or of the militia. (b) The Spanish governor of Cuba and its dependent islands.
 Captain lieutenant, a lieutenant with the rank and duties of captain but with a lieutenant's pay, -- as in the first company of an English regiment.