Bit of a subway station wall (4)
I believe the answer is:
tile
(Other definitions for tile that I've seen before include "Thin slab used to cover roof, wall, floor etc" , "Scrabble piece" , "Flat piece of ceramic" , "Hat" , "Roofing material" .)
I believe the answer is:
tile
(Other definitions for tile that I've seen before include "Thin slab used to cover roof, wall, floor etc" , "Scrabble piece" , "Flat piece of ceramic" , "Hat" , "Roofing material" .)