/ Dictionary / Index I Idaho Falls: Meaning and Definition of Find definitions for: I'daho Falls' Pronunciation: [key] a city in E Idaho. 39,590. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Idaho Id al-Adha Related Content Daily Word Quiz: profiterole Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language