/ Dictionary / Index B Bonneville Flats: Meaning and Definition of Find definitions for: Bon'neville Flats' Pronunciation: [key] an area of salt flats in the W part of Great Salt Lake Desert, in NW Utah: site of automobile speed tests. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. Bonneville Bonnie Related Content Daily Word Quiz: candor Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language