Like a mosaic (5)
I believe the answer is:
tiled
'like a mosaic' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for tiled that I've seen before include "with a glazed look" , "Covered or floored with baked clay" , "Lined with small glazed rectangles, say bathroom" , "Covered eg as walls of shower area" , "like bathrooms" .)