/ Dictionary / Index R Rocky Mountain bighorn: Meaning and Definition of Find definitions for: Rock'y Moun'tain big'horn Pronunciation: [key] bighorn. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rocky Mountain beeplant Rocky Mountain flowering raspberry Related Content Daily Word Quiz: cautious Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language