Source : Webster's Revised Unabridged Dictionary (1913)

Raven \Ra"ven\, n. [AS. hr[ae]fn; akin to raaf, G. rabe, OHG.
   hraban, Icel. hrafn, Dan. ravn, and perhaps to L. corvus, Gr.
   ?. ???.] (Zo["o]l.)
   A large black passerine bird ({Corvus corax}), similar to the
   crow, but larger. It is native of the northern part of
   Europe, Asia and America, and is noted for its sagacity.

   {Sea raven} (Zo["o]l.), the cormorant.

Source : WordNet®

Corvus corax
     n : large black bird with a straight bill and long wedge-shaped
         tail [syn: {raven}]