Tile work
I believe the answer is:
mosaic
'tile work' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for mosaic that I've seen before include "Design of many small pieces" , "Inlaid stone decoration" , "Decorative work of small hard pieces" , "Pattern made with tiny pieces of stone or glass" , "Picture made with pieces of glass and stone" .)