Where does “millépore” come from?

millépore (French) comes from Latin porus, from Ancient Greek πόρος, from Ancient Greek πείρω, from Proto-Hellenic *péryō.

Ancestry of “millépore”, step by step

Step	Language	Word	Meaning
1	Latin	porus	pore, passage in the body; tufa
2	Ancient Greek	πόρος	a means of passage, passageway, way, opening;...
3	Ancient Greek	πείρω	I pierce, run through; I cleave through
4	Proto-Hellenic	*péryō	—