Where does “sfregatura” come from?

sfregatura (Italian) comes from Italian sfregare, from Italian fregare, from Latin fricare, from Latin frico, from Latin frio, from Proto-Italic *friāō.

sfregatura (Italian): rub, rubbing

Definitions

rub, rubbing

Ancestry of “sfregatura”, step by step

Step	Language	Word	Meaning
1	Italian	sfregare	to rub; to scratch; to strike
2	Italian	fregare	to rub; to polish; to cheat
3	Latin	fricare	present active infinitive of fricō; second-person...
4	Latin	frico	I rub; I chafe
5	Latin	frio	I crumble, rub, or break into pieces
6	Proto-Italic	*friāō	—

Every word from Proto-Italic *friāō →