Source : Webster's Revised Unabridged Dictionary (1913)

Poachard \Poach"ard\, n. [From {Poach} to stab.] [Written also
   {pocard}, {pochard}.] (Zo["o]l.)
   (a) A common European duck ({Aythya ferina}); -- called also
       {goldhead}, {poker}, and {fresh-water, or red-headed},
       {widgeon}.
   (b) The American redhead, which is closely allied to the
       European poachard.

   {Red-crested poachard} (Zo["o]l.), an Old World duck ({Branta
      rufina}).

   {Scaup poachard}, the scaup duck.

   {Tufted poachard}, a scaup duck ({Aythya, or Fuligula
      cristata}), native of Europe and Asia.

Source : WordNet®

Aythya ferina
     n : heavy-bodied Old World diving duck having a gray-and-black
         body and reddish head [syn: {pochard}]