/ Dictionary / Index M millhouse: Meaning and Definition of Find definitions for: mill•house Pronunciation: (mil'hous"), [key] — pl. -hous•es a building that houses milling machinery, esp. of flour. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. mill hole milli- Related Content Daily Word Quiz: paradox Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language