Guaycuruan languages

Guaycuruan languages, group of Guaycurú-Charruan languages spoken in Brazil, Argentina, and Paraguay. Of the Guaycuruan tribes, formerly inhabiting the Gran Chaco, the best known include the Abipón (Callaga), Caduveo (also called Mbayá and Guaycurú), Mocoví (Mocobí), Payaguá (Lengua), Pilagá, and Toba. Many Guaycuruan-speaking groups acquired the horse from the Spaniards and became famous in the 17th and 18th centuries for their highly stratified, warlike societies. The Caduveo, for example, developed definite classes of nobles, serfs,...