Source : Webster's Revised Unabridged Dictionary (1913)

Freighter \Freight"er\, n.
   1. One who loads a ship, or one who charters and loads a
      ship.

   2. One employed in receiving and forwarding freight.

   3. One for whom freight is transported.

   4. A vessel used mainly to carry freight.

Source : WordNet®

freighter
     n : a cargo ship; "they did much of their overseas trade in
         foreign bottoms" [syn: {bottom}, {merchantman}, {merchant
         ship}]