Definition of Rio Grande
1play \ˌrē-(ˌ)ō-ˈgrand, -ˈgran-dē also ˌrī-ō-ˈgrand\ or Mexican Spanish Río Bravoplay \ˌrē-(ˌ)ō-ˈbrä-(ˌ)vō\ river 1885 miles (3034 kilometers) long in the southwestern U.S. forming the boundary between Mexico and Texas and flowing from the San Juan Mountains in southwestern Colorado to the Gulf of Mexico
3\ˌrē-(ˌ)ō-ˈgrän-dā, -dē\ municipality in northeastern Puerto Rico east-southeast of San Juan population 54,304
4 — see grande, rio 2
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