Rio Grande River

Proper noun

the Rio Grande

1. A major river in the United States and Mexico, starting in Colorado, flowing through New Mexico, and forming the boundary between Texas and the Mexican states of Chihuahua, Coahuila, Nuevo León and Tamaulipas for most of its length.
   • Article V.
     The Boundary line between the two Republics shall commence in the Gulf of Mexico, three leagues from land, opposite the mouth of the Rio Grande, otherwise called Rio Bravo del Norte, or opposite the mouth of it’s deepest branch, if it should have more than one branch emptying directly...1848, Treaty of Guadalupe Hidalgo^(https://en.wikisource.org/wiki/Treaty_of_Guadalupe_Hidalgo_(original))
2. An unincorporated community and census-designated place in Lower Township and Middle Township, Cape May County, New Jersey, United States, named after the above river.