Source : Webster's Revised Unabridged Dictionary (1913)

Hooded \Hood"ed\, a.
   1. Covered with a hood.

   2. Furnished with a hood or something like a hood.

   3. Hood-shaped; esp. (Bot.), rolled up like a cornet of
      paper; cuculate, as the spethe of the Indian turnip.

   4. (Zo["o]l.)
      (a) Having the head conspicuously different in color from
          the rest of the plumage; -- said of birds.
      (b) Having a hoodlike crest or prominence on the head or
          neck; as, the hooded seal; a hooded snake.

   {Hooded crow}, a European crow (Corvus cornix); -- called
      also {hoody}, {dun crow}, and {royston crow}.

   {Hooded gull}, the European black-headed pewit or gull.

   {Hooded merganser}. See {Merganser}.

   {Hooded seal}, a large North Atlantic seal ({Cystophora
      cristata}). The male has a large, inflatible, hoodlike sac
      upon the head. Called also {hoodcap}.

   {Hooded sheldrake}, the hooded merganser. See {Merganser}.

   {Hooded snake}. See {Cobra de capello}, {Asp}, {Haje}, etc.
      

   {Hooded warbler}, a small American warbler ({Sylvania
      mitrata}).

Source : WordNet®

hooded seal
     n : medium-sized blackish-gray seal with large inflatable sac on
         the head; of Arctic and northern Atlantic waters [syn: {bladdernose},
          {Cystophora cristata}]