/ Dictionary / Index D day room: Meaning and Definition of Find definitions for: day' room" Pronunciation: [key] a room at an institution, as on a military base, providing facilities for leisure activities. (in a hospital) a recreation room for ambulatory patients. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. daypack days Related Content Daily Word Quiz: diligent Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language