/ Dictionary / Index S spongillafly: Meaning and Definition of Find definitions for: spon•gil•la•fly Pronunciation: (spun-jil'u-flī", spon-), [key] — pl. -flies. spongefly. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: spongillafly (Thesaurus) spongeware spongin Related Content Daily Word Quiz: procrastinate Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language