river in central Brazil, flowing north into the Tocantins: c. 1,300 mi (2,092 km)
See Araguaia in American Heritage Dictionary 4
or A·ra·gua·ya(ärˌə-gwīˈə)
A river rising in central Brazil and flowing about 2,092 km (1,300 mi) generally northward to the Tocantins River. There are numerous falls on the river.