Bit of mosaic (7)
'bit of mosaic' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for tile that I've seen before include "Roofing material" , "Roofing slab" , "Mah-jong piece" , "Thin slab of fired clay" , "Roof slabs" .)
'bit of mosaic' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for tessera that I've seen before include "Mosaic stone" , "Die" , "Mosaic component" , "Small stone for mosaics" , "Small square tile used in mosaics" .)