Pilcomayo

(pēl′kō̂ mäyō̂)

river flowing from S Bolivia southeast along the Argentine-Paraguayan border into the Paraguay River, near Asunción: c. 1,000 mi (1,609 km)

See Pilcomayo in American Heritage Dictionary 4

A river of central South America rising in central Bolivia and flowing about 1,609 km (1,000 mi) southeast along the Argentina-Paraguay border to the Paraguay River.
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