Grout

Part of speech: noun (n.)

1. Coarse meal; ground malt; pl. groats.

2. Formerly, a kind of beer or ale. [Eng.]

3. Lees; dregs; grounds. [Eng.] "Grouts of tea." Dickens.

4. 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.

Part of speech: verb (v.)

To fill up or finish with grout, as the joints between stones.