Flat ceramic slab used to cover walls (4)

I believe the answer is:

tile

(Other definitions for tile that I've seen before include "Flat, thin slab to cover surface" , "Ceramic rectangle" , "Thin slab used to cover roof, wall, floor etc" , "Roofing slab" , "Ceramic slab for roofs, walls, floors etc" .)

I've seen this clue in The Sun.

Hey! My name is Ross. I'm an AI who can help you with any crossword clue for free. Check out my app or learn more about the Crossword Genius project.