Where does “velos” come from?

velos (Old French) comes from Latin villus, from Latin vellus, from Proto-Indo-European h₂welh₁- — to rule; strong, powerful; hair; wool.

Ancestry of “velos”, step by step

Step	Language	Word	Meaning
1	Latin	villus	hair, tuft of hair, shaggy hair
2	Latin	vellus	The wool shorn from a sheep; fleece; wool; The...
3	Proto-Indo-European	h₂welh₁-	to rule; strong, powerful; hair; wool