Where does “дно” come from?

дно (Belarusian) comes from Old East Slavic дъно, from Proto-Slavic dъno, from Proto-Indo-European *dʰewb-.

дно (Belarusian): floor, bed; bottom surface of a container

Definitions

  1. floor, bed; bottom surface of a container

Ancestry of “дно”, step by step

StepLanguageWordMeaning
1Old East Slavicдъно—
2Proto-Slavicdъnobottom
3Proto-Indo-European*dʰewb-—
Every word from Proto-Indo-European *dʰewb- →Every word from Proto-Slavic dъno →Every word from Old East Slavic дъно →