Where does “renile” come from?

renile (Vulgar Latin) comes from Latin rēn, from Proto-Italic hrēn, from Proto-Indo-European gʷʰren- — soul, mind; mind; an internal part of the body.

Ancestry of “renile”, step by step

Step	Language	Word	Meaning
1	Latin	rēn	kidney
2	Proto-Italic	hrēn	—
3	Proto-Indo-European	gʷʰren-	soul, mind; mind; an internal part of the body

Words derived from “renile”

rẽil
ril
ril

Every word from Proto-Indo-European gʷʰren- →Every word from Proto-Italic hrēn →Every word from Latin rēn →