a North American river; boundary between the United States and Mexico; flows into Gulf of Mexico

(Spanish) The river running through the southwestern United States and along the border of the modern nations of Mexico and the U.S. The river originates in the San Juan Mountains of Colorado and spills into the Gulf of Mexico at Brownsville, Texas. It was the backbone of much indigenous agriculture and settlement in northern Spanish America, particularly among Pueblos.

the river that borders Texas on the southwest.

Known as the Rio Grande in the United States and as the Río Bravo (or, more formally, the Río Bravo del Norte) in Mexico, the river, 1,885 mi (3,034 km) long, is the third longest river system in the United States.

Rio Grande is a 1950 film and the third installment of John Ford's "cavalry trilogy", following Fort Apache (1948) and She Wore a Yellow Ribbon (1949). John Wayne stars in all three films, as Captain Kirby Yorke (York) in Fort Apache, then as Capt. of Cavalry Nathan Cutting Brittles in She Wore a Yellow Ribbon, and finally as a promoted Lieutenant Colonel Kirby Yorke (York) in Rio Grande.