[grout] n [ME, coarse meal, fr. OE grut; akin to OE greot grit] (1638) 1 a: thin mortar used for filling spaces (as the joints in masonry); also: any of various other materials (as a mixture of cement and water or chemicals that solidify) used for a similar purpose b: plaster
2: lees
[2]grout vt (1838) 1: to fill up or finish with grout
2: to fix in place by means of grout "~ a bolt into a wall" -- grout.er n