bow chaser

Bow \Bow\ (b[=o]), n. [Icel. b[=o]gr shoulder, bow of a ship.
   See {Bough}.]
   [1913 Webster]
   1. (Naut.) The bending or rounded part of a ship forward; the
      stream or prow.
      [1913 Webster]

   2. (Naut.) One who rows in the forward part of a boat; the
      bow oar.
      [1913 Webster]

   {Bow chaser} (Naut.), a gun in the bow for firing while
      chasing another vessel. --Totten.
      [1913 Webster]

   {Bow piece}, a piece of ordnance carried at the bow of a
      ship.

   {On the bow} (Naut.), on that part of the horizon within
      45[deg] on either side of the line ahead. --Totten.
      [1913 Webster]
    

Chaser \Chas"er\, n.
   1. One who or that which chases; a pursuer; a driver; a
      hunter.
      [1913 Webster]

   2. (Naut.) Same as {Chase gun}, esp. in terms {bow chaser}
      and {stern chaser}. See under {Bow}, {Stern}.
      [1913 Webster]