Pronunciation: (grout),[key] —n. 1. 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.
2. a coat of plaster for finishing a ceiling or interior wall.
3. Usually, grouts. lees; grounds.
4. Archaic. a. coarse meal or porridge.
—v.t. 1. to fill or consolidate with grout.
2. to use as grout.