Mah-jongg pieces (5)
I believe the answer is:
tiles
'mah-jongg pieces' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tiles that I've seen before include "Small oblong slabs used in roofing" , "Thin flat slabs, for roofing perhaps" , "Glazed rectangles used to cover walls or floors" , "Thin flat slabs of fired clay" , "Roofing materials" .)