/ Dictionary / Index M Mount Prospect: Meaning and Definition of Find definitions for: Mount" Pros'pect Pronunciation: [key] a city in NE Illinois, near Chicago. 52,634. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Mount Pleasant Mount Rainier Related Content Daily Word Quiz: exemplary Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language