tile

(noun) a flat thin rectangular slab (as of fired clay or rubber or linoleum) used to cover surfaces.

(noun) a thin flat slab of fired clay used for roofing. Synonyms: roofing tile.

(noun) game equipment consisting of a flat thin piece marked with characters and used in board games like Mah-Jong, Scrabble, etc..

(verb) cover with tiles. Example: "Tile the wall and the floor of the bathroom."