/ Dictionary / Index A aspergillum: Meaning and Definition of Find definitions for: as•per•gil•lum Pronunciation: (as"pur-jil'um), [key] — pl. -gil•la -gil•lums. a brush or instrument for sprinkling holy water; aspersorium. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. aspergillosis aspergillus Related Content Daily Word Quiz: effervescent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language