1911 Encyclopædia Britannica/Charrua
CHARRUA, a tribe of South American Indians, wild and warlike, formerly ranging over Uruguay and part of S. Brazil. They were dark and heavily built, fought on horses and used the bolas or weighted lasso. They were always at war with the Spaniards, and Juan Diaz de Solis was killed by them in 1516. As a tribe they are now almost extinct, but the modern Gauchos of Uruguay have much Charrua blood in them.