Unknown.
күкүр • (kükür)
- manger, feed trough (for livestock)
- Synonym: долборук (dolboruk)
Onomatopoeia.
күкүр • (kükür)
- The sound of grinding, scraping, or rubbing, for example with a thick file.
- күкүр-күкүр аал ― kükür-kükür aal ― to rub (and make such a sound)