/ Dictionary / Index R River Plate: Meaning and Definition of Find definitions for: Riv'er Plate' Pronunciation: [key] — Brit. Brit. See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. river otter River Rouge Related Content Daily Word Quiz: perspicacious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language