/ Dictionary / Index B bilestone: Meaning and Definition of Find definitions for: bile•stone Pronunciation: (bīl'stōn"), [key] — n. gallstone. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bilestone (Thesaurus) bile salt bi-level Related Content Daily Word Quiz: secular Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language