/ Dictionary / Index N Natural Bridge: Meaning and Definition of Find definitions for: Nat'ural Bridge' Pronunciation: [key] a natural limestone bridge in western Virginia. 215 ft. (66 m) high; 90 ft. (27 m) span. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. natural-born Natural Bridges Related Content Daily Word Quiz: dormant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language