Where does “домра” come from?

домра (Russian) comes from Persian تنبور, from Arabic طُنْبُور, from Persian دنب بره — lamb's tail.

Ancestry of “домра”, step by step

Step	Language	Word	Meaning
1	Persian	تنبور	tanbur
2	Arabic	طُنْبُور	—
3	Persian	دنب بره	lamb's tail

домра — Etymology, Origin & Word History | Etymology Explorer