The Collaborative International Dictionary of English v.0.48:

Renard \Ren"ard\ (r?n"?rd), n. [F. renard the fox, the name of
   the fox in a celebrated epic poem, and of German origin, G.
   Reinhard, OHG. Reginhard, properly, strong in counsel; regin
   counsel (akin to Goth. ragin) + hart hard. See Hard.]
   A fox; -- so called in fables or familiar tales, and in
   poetry. [Written also reynard.]
   [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Reynard \Rey"nard\, n.
   An appelation applied after the manner of a proper name to
   the fox. Same as Renard.
   [1913 Webster]

WordNet (r) 3.0 (2006):

Reynard
    n 1: a conventional name for a fox used in tales following usage
         in the old epic `Reynard the Fox'

Moby Thesaurus II by Grady Ward, 1.0:

28 Moby Thesaurus words for "reynard":
   African hunting dog, Artful Dodger, Cape hunting dog,
   Philadelphia lawyer, Yankee horse trader, brush wolf, charmer,
   coyote, crafty rascal, dingo, dodger, fox, glib tongue,
   horse trader, hyena, jackal, lobo, medicine wolf, prairie wolf,
   shyster, slick citizen, sly dog, slyboots, sweet talker, swindler,
   timber wolf, trickster, wolf