The story
- Mongolian · derived fromбулаг нуур
- Chinese · derived from博伦斯诺尔
- Chinese · borrowed from波羅諾 /波罗诺
- English todayBoluonuo
Borrowed from Chinese 波羅諾 /波罗诺, earlier Chinese 博伦斯诺尔, in turn from Mongolian булаг нуур (bulag nuur), made of булаг (bulag, “a spring, origin, source”) and нуур (nuur, “lake”).
Etymology from Wiktionary, CC BY-SA 4.0.