/ Dictionary / Index R rooming-in: Meaning and Definition of Find definitions for: room•ing-in Pronunciation: (r'ming-in', room'ing-), [key] — n. an arrangement in some hospitals that enables postpartum mothers to keep their babies with them in their rooms rather than in a separate nursery. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. rooming house roommate Related Content Daily Word Quiz: nonchalant Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language