n. - A head, or chief officer
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.
n. - An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army.
n. - By courtesy, an officer actually commanding a vessel, although not having the rank of captain.
n. - The master or commanding officer of a merchant vessel.
n. - One in charge of a portion of a ship's company; as, a captain of a top, captain of a gun, etc.
n. - The foreman of a body of workmen.
n. - A person having authority over others acting in concert; as, the captain of a boat's crew; the captain of a football team.
n. - A military leader; a warrior.
v. t. - To act as captain of; to lead.
a. - Chief; superior.