[quet.zal] n, pl quetzals or quet.za.les [AmerSp, fr. Nahuatl quetzalli tail coverts of the quetzal] (1827) 1: a Central American trogon (Pharomachrus mocinno) that has brilliant green plumage above, a red breast, and in the male long upper tail coverts
2. pl quetzales: the basic monetary unit of Guatemala