\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.