Where does “intrapillar” come from?

intrapillar (English) comes from English pillar, from Old French pilier, from Vulgar Latin pilare, from Latin pila, from Latin pīlus, from Latin pīlum, from Proto-Italic pistlom, from Proto-Indo-European pis-tlo- — to grind, to crush.

intrapillar (English): Within a pillar

Definitions

Within a pillar

Ancestry of “intrapillar”, step by step

Step	Language	Word	Meaning
1	English	pillar	A large post, often used as supporting...
2	Old French	pilier	—
3	Vulgar Latin	pilare	a pillar
4	Latin	pila	mortar; pillar; pier
5	Latin	pīlus	a hair
6	Latin	pīlum	a pounder, pestle
7	Proto-Italic	pistlom	—
8	Proto-Indo-European	pis-tlo-	—
9	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 →