The Collaborative International Dictionary of English v.0.48:

Raccoon \Rac*coon"\ (r[a^]k*k[=oo]n"), n. [F. raton, prop., a
   little rat, fr. rat rat, perhaps of German origin. See
   Rat.] (Zool.)
   A North American nocturnal carnivore (Procyon lotor) allied
   to the bears, but much smaller, and having a long, full tail,
   banded with black and gray. Its body is gray, varied with
   black and white. Called also coon, and mapach.
   [1913 Webster]

   Raccoon dog (Zool.), the tanate.

   Raccoon fox (Zool.), the cacomixle.
      [1913 Webster]

WordNet (r) 3.0 (2006):

raccoon
    n 1: the fur of the North American racoon
    2: an omnivorous nocturnal mammal native to North America and
       Central America [syn: raccoon, racoon]

Moby Thesaurus II by Grady Ward, 1.0:

29 Moby Thesaurus words for "raccoon":
   Cape polecat, ape, bar, bear, cavy, chimp, chimpanzee, coon,
   ferret, foumart, glutton, groundhog, guinea pig, hedgehog, monk,
   monkey, mousehound, opossum, polecat, porcupine, possum,
   prairie dog, quill pig, skunk, weasel, whistle-pig, wolverine,
   woodchuck, zoril