/ Dictionary / Index R River Grove: Meaning and Definition of Find definitions for: Riv'er Grove' Pronunciation: [key] a town in NE Illinois. 10,368. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. River Forest riverhead Related Content Daily Word Quiz: jugular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language