/ Dictionary / Index R Red River War: Meaning and Definition of Find definitions for: Red' Riv'er War' Pronunciation: [key] a punitive campaign (1874–75) led by General Sheridan against hostile Indians in the region of the Red River and the Llano Estacado. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Red River redroot Related Content Daily Word Quiz: vertigo Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language