/ Dictionary / Index G grout: Meaning and Definition of Find definitions for: grout Pronunciation: (grout), [key] — n. a thin, coarse mortar poured into various narrow cavities, as masonry joints or rock fissures, to fill them and consolidate the adjoining objects into a solid mass. a coat of plaster for finishing a ceiling or interior wall. Usually,lees; grounds. coarse meal or porridge. grouts,groats. —v.t. to fill or consolidate with grout. to use as grout. Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease. See also: grout (Thesaurus) grouse grout box 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