(~s, ~ing, ~ed)
1.
Grout is a thin mixture of sand, water, and cement or lime, which is used to fill in the spaces between tiles that are fixed to a wall.
N-UNCOUNT
2.
If you ~ the tiles on a wall, you use ~ to fill in the spaces between the tiles.
Make sure that your tiles are thoroughly ~ed and sealed.
VERB: be V-ed, also V n