köken: Etymology tree Proto-Iranian *baywáram Old Persian *baivaram Middle Persian 𐫁𐫏𐫇𐫡 (bywr /bēwar/) Persian بیور Inherited from Middle Persian 𐫁𐫏𐫇𐫡 (bywr /bēwar/), from Old Persian *baivaram, from Proto-Iranian *baywáram (accusative of *baywā́).
Tyumen (a city, the administrative center of Tyumen Oblast, Russia)
köken: The name of the Bashkir city passed into the Russian language after the conquest of the Siberian Khanate. From Volga Turki تومان (tümän, “ten thousand”). Compare Mongolian түмэн (tümen) and Azerbaijani tümən.