Where does “piastrellaio” come from?

piastrellaio (Italian) comes from Italian piastrella, from Italian piastra, from Italian impiastrare, from Latin emplastrare.

piastrellaio (Italian): tile maker or layer

Definitions

Step	Language	Word	Meaning
1	Italian	piastrella	tile
2	Italian	piastra	sheet, plate; slab; hotplate
3	Italian	impiastrare	to plaster, dirty or smear
4	Latin	emplastrare	—

piastrellaio — Etymology, Origin & Word History | Etymology Explorer