Where does “yoni” come from?

yoni (Pali) comes from Sanskrit योनि, from Proto-Indo-Iranian yauni — abode.

yoni (Pali): womb; origin

Definitions

Step	Language	Word	Meaning
1	Sanskrit	योनि	the womb, uterus, vulva, vagina, female organs of...
2	Proto-Indo-Iranian	yauni	abode

yoni — Etymology, Origin & Word History | Etymology Explorer