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'