/ Dictionary / Index S screwworm fly: Meaning and Definition of Find definitions for: screw'worm fly" Pronunciation: [key] the adult screwworm. Also called Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. screwworm screwy Related Content Daily Word Quiz: crutiny Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language