Source : Webster's Revised Unabridged Dictionary (1913)

Hoy \Hoy\, n. [D. heu, or Flem. hui.] (Naut.)
   A small coaster vessel, usually sloop-rigged, used in
   conveying passengers and goods from place to place, or as a
   tender to larger vessels in port.

         The hoy went to London every week.       --Cowper.

Hoy \Hoy\, interj. [D. hui. Cf. {Ahoy}.]
   Ho! Halloe! Stop!

Source : WordNet®

hoy
     n : a flatbottom boat for carrying heavy loads (especially on
         canals) [syn: {barge}, {flatboat}, {lighter}]