Where does “*törü-” come from?

*törü- (Proto-Turkic) comes from Proto-Turkic töŕ — foundation, root; origin, ancestors.

Ancestry of “*törü-”, step by step

Step	Language	Word	Meaning
1	Proto-Turkic	töŕ	foundation, root; origin, ancestors

*törü- — Etymology, Origin & Word History | Etymology Explorer