noun lees; dregs; grounds.
2. grout ·noun formerly, a kind of beer or ale.
3. grout ·noun coarse meal; ground malt; ·pl groats.
4. grout ·vt to fill up or finish with grout, as the joints between stones.
5. grout ·noun a thin, coarse mortar, used for pouring into the joints of masonry and brickwork; also, a finer material, used in finishing the best ceilings. gwilt.