Noun

1. In a ship's boat, the helmsman given charge of the boat's crew.
2. In a rowing crew, the member who steers the shell and coordinates the power and rhythm of the rowers.
3. The second or third mate of a vessel, in charge of the master's barge.
4. A rank or position.
   1. Canadian Navy Coxswain (or Capitaine d'Armes) is the senior non-commissioned officer aboard a ship
   2. British Royal Navy Cadets Cadet Coxswain is the highest normal rank which may be achieved.