/ Dictionary / Index B bells and whistles: Meaning and Definition of Find definitions for: bells' and whis'tles Pronunciation: [key] — Informal. Informal. features added to a product; special parts or functions; extras. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. bells bell seat Related Content Daily Word Quiz: fabricate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language