or Chaco geographical name region S central South America drained by the Paraguay & its chief W tributaries the Pilcomayo & Bermejo; divided between Argentina, Bolivia, & Paraguay
GRAN CHACO
Meaning of GRAN CHACO in English
Merriam Webster. Explanatory English dictionary Merriam Webster. Толковый словарь английского языка Мерриам-Уэбстер. 2012