/ Dictionary / Index G guardroom: Meaning and Definition of Find definitions for: guard•room Pronunciation: (gärd'rm", -room"), [key] — n. a room used by military guards during the period they are on duty. a room in which military prisoners are kept. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: guardroom (Thesaurus) guard ring guardsman Related Content Daily Word Quiz: endear Analogy of the Day: Today’s Analogy Spelling Bee: Today’s Spelling Bee Frequently Misspelled Words Frequently Mispronounced Words Easily Confused Words Writing & Language