Where does “נעסטער” come from?

נעסטער (Yiddish) comes from Old East Slavic Дънѣстръ, from Proto-Slavic *Dъněstrъ.

Ancestry of “נעסטער”, step by step

StepLanguageWordMeaning
1Old East SlavicДънѣстръ—
2Proto-Slavic*Dъněstrъ—
Every word from Proto-Slavic *Dъněstrъ →Every word from Old East Slavic Дънѣстръ →