/ Dictionary / Index M Mount Rainier: Meaning and Definition of Find definitions for: Mount' Rai•nier' Pronunciation: (rā-nēr', ru-, rā'nēr), [key] See Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mount Prospect Mount Rainier National Park Related Content Daily Word Quiz: tactful Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language