/ Dictionary / Index R Rocky Mountain National Park: Meaning and Definition of Find definitions for: Rock'y Moun'tain Na'tional Park' Pronunciation: [key] a national park in N Colorado. 405 sq. mi. (1050 sq. km). Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Rocky Mountain locust Rocky Mountain oyster Related Content Daily Word Quiz: pundit Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language