Where does “pilastrata” come from?

pilastrata (Italian) comes from Italian pilastro, from Italian pila, from Latin pila, from Latin pīlus, from Latin pīlum, from Proto-Italic pistlom, from Proto-Indo-European pis-tlo-, from Proto-Indo-European peys- — to grind, to crush.

pilastrata (Italian): pilastrade; pillars, pilasters

Definitions

pilastrade; pillars, pilasters

Ancestry of “pilastrata”, step by step

Step	Language	Word	Meaning
1	Italian	pilastro	pillar, column; pilaster; obelisk
2	Italian	pila	pile; battery; torch / flashlight
3	Latin	pila	mortar; pillar; pier
4	Latin	pīlus	a hair
5	Latin	pīlum	a pounder, pestle
6	Proto-Italic	pistlom	—
7	Proto-Indo-European	pis-tlo-	—
8	Proto-Indo-European	peys-	to grind, to crush

Every word from Proto-Indo-European peys- →Every word from Proto-Indo-European pis-tlo- →Every word from Proto-Italic pistlom →