chachalacaPronunciation: /ˌtʃatʃəˈlakə/Definition of chachalaca noun a pheasant-like tree-dwelling bird of the guan family, found mainly in the forests of tropical America. Genus Ortalis, family Cracidae Origin: late 19th century: via South American Spanish from Nahuatl, of imitative originchachalaca in other Oxford dictionaries Definition of chachalaca in the US English dictionary