/ Dictionary / Index H housefly: Meaning and Definition of Find definitions for: house•fly Pronunciation: (hous'flī"), [key] — pl. -flies. a medium-sized, gray-striped fly, Musca domestica, common around human habitations in nearly all parts of the world. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: housefly (Thesaurus) house flag houseful Related Content Daily Word Quiz: stringent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language