Where does “tannbørste” come from?

tannbørste (Norwegian Nynorsk) comes from Norwegian Nynorsk børste, from German Bürste, from Middle High German bürste, from Old High German burst, from Proto-Germanic burstiz, from Proto-Germanic bʰurstís, from Proto-Indo-European bʰr̥s-tí-s, from Proto-Indo-European bʰers- — top, tip, point.

tannbørste (Norwegian Nynorsk): a toothbrush

Definitions

  1. a toothbrush

Ancestry of “tannbørste”, step by step

tannbørste traces back through two separate lines of ancestry.

via Norwegian Nynorsk børste

StepLanguageWordMeaning
1Norwegian Nynorskbørstea brush; to brush
2GermanBürstebrush
3Middle High Germanbürste—
4Old High Germanburstbristle
5Proto-Germanicburstizbristle
6Proto-Germanicbʰurstís—
7Proto-Indo-Europeanbʰr̥s-tí-s—
8Proto-Indo-Europeanbʰers-top, tip, point

via Norwegian Nynorsk tann

StepLanguageWordMeaning
1Norwegian Nynorsktanna tooth; a cog
2Old Norsetǫnntooth
3Proto-Germanictanþstooth
4Proto-Indo-Europeanh₃dóntstooth
5Proto-Indo-Europeanh₁ed-to eat
Every word from Proto-Indo-European bʰers- →Every word from Proto-Indo-European bʰr̥s-tí-s →Every word from Proto-Germanic bʰurstís →