Red River, theˌRed ˈRiver, the 
a long river in the south of the US, which forms part of the border between the states of Oklahoma and Texas. There is a popular US folk song called The Red River Valley which contains the words: Oh remember the Red River Valley and the cowboy who loves you so true.
a long river in the south of the US, which forms part of the border between the states of Oklahoma and Texas. There is a popular US folk song called The Red River Valley which contains the words: Oh remember the Red River Valley and the cowboy who loves you so true.