Captain

1. Chief; superior.
2. A military leader; a warrior.
3. A head, or chief officer
4. A person having authority over others acting in concert; as, the captain of a boat's crew; the captain of a football team.
5. By courtesy, an officer actually commanding a vessel, although not having the rank of captain.
6. One in charge of a portion of a ship's company; as, a captain of a top, captain of a gun, etc.
7. The master or commanding officer of a merchant vessel.
8. The foreman of a body of workmen.
9. 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.
10. An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army.