Source : Webster's Revised Unabridged Dictionary (1913)

Toucan \Tou"can\, n. [F., fr. Pg. tucano; from Brazilian name. ]
   1. (Zo["o]l.) Any one of numerous species of fruit-eating
      birds of tropical America belonging to {Ramphastos},
      {Pteroglossus}, and allied genera of the family
      {Ramphastid[ae]}. They have a very large, but light and
      thin, beak, often nearly as long as the body itself. Most
      of the species are brilliantly colored with red, yellow,
      white, and black in striking contrast.

   2. (Astronom.) A modern constellation of the southern
      hemisphere.

Source : WordNet®

toucan
     n : brilliantly colored arboreal fruit-eating bird of tropical
         America having a very large thin-walled beak