Source : Webster's Revised Unabridged Dictionary (1913)

Coon \Coon\, n. (Zo["o]l.)
   A raccoon. See {Raccoon}.

Source : WordNet®

coon
     n 1: an eccentric or undignified rustic; "I'll be a gone coon
          when the battle starts"
     2: (ethnic slur) offensive name for a Black person; "only a
        Black can call another Black a nigga" [syn: {nigger}, {nigga},
         {spade}, {jigaboo}, {nigra}]
     3: North American raccoon [syn: {common raccoon}, {common
        racoon}, {ringtail}, {Procyon lotor}]