/ Dictionary / Index B bolus: Meaning and Definition of Find definitions for: bo•lus Pronunciation: (bō'lus), [key] — pl. -lus•es. a round mass of medicinal material, larger than an ordinary pill. Abbr.: bol. a soft, roundish mass or lump, esp. of chewed food. bole. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: bolus (Thesaurus) Boltzmann constant Bolyai 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