grout

n. a thin, hard paste used to fill the narrow gaps between tiles on a wall or floor.

n. a fluid form of concrete or mortar used to fill gaps, especially the joints between tiles or stones.

“The white grout between the bathroom tiles is starting to turn yellow.”

“The contractor recommended a waterproof epoxy grout for the shower floor to prevent moisture from seeping into the subfloor.”

n. the solid material that settles at the bottom of a liquid.

n. the dregs or sediment found at the bottom of a container of liquid. This sense is largely restricted to historical or literary contexts.

“He looked at the dark grout at the bottom of his cup of ale.”

“The old recipe warned that the bitter grout must be strained through a fine cloth before the liquid could be served to guests.”

Archaic · Literary