The Collaborative International Dictionary of English v.0.48:

Trogon \Tro"gon\, n. [NL.] (Zool.)
   Any one of numerous species of beautiful tropical birds
   belonging to the family Trogonidae. They are noted for the
   brilliant colors and the resplendent luster of their plumage.
   [1913 Webster]

   Note: Some of the species have a train of long brilliant
         feathers lying over the tail and consisting of the
         upper tail coverts. Unlike other birds having two toes
         directed forward and two backward, they have the inner
         toe turned backward. A few species are found in Africa
         and India, but the greater number, including the most
         brilliant species, are found in tropical America. See
         Illust. of Quesal.
         [1913 Webster]

WordNet (r) 3.0 (2006):

trogon
    n 1: forest bird of warm regions of the New World having
         brilliant lustrous plumage and long tails