Captain

1. a. Chief; superior.
2. n. A head, or chief officer
3. 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.
4. n. An officer in the United States navy, next above a commander and below a commodore, and ranking with a colonel in the army.
5. n. By courtesy, an officer actually commanding a vessel, although not having the rank of captain.
6. n. The master or commanding officer of a merchant vessel.
7. n. One in charge of a portion of a ship’s company; as, a captain of a top, captain of a gun, etc.
8. n. The foreman of a body of workmen.
9. n. A person having authority over others acting in concert; as, the captain of a boat’s crew; the captain of a football team.
10. n. A military leader; a warrior.
11. 1a. 1 Chief; superior.

The word meanings were obtained from OPTED(The Online Plain Text English Dictionary), which is based on “The Project Gutenberg Etext of Webster’s Unabridged Dictionary” which is in turn based on the 1913 US Webster’s Unabridged Dictionary (See Project Gutenburg), as a text file.