Where does “Bifrost” come from?

Bifrost (Danish) comes from Old Norse Bifrǫst, from Old Norse rǫst, from Proto-Germanic rastō, from Proto-Indo-European ros-.

Bifrost (Danish): Bifrost the rainbow bridge connecting Asgard with Midgard

Definitions

  1. Bifrost the rainbow bridge connecting Asgard with Midgard

Ancestry of “Bifrost”, step by step

StepLanguageWordMeaning
1Old NorseBifrǫstBifrost, the rainbow bridge connecting Asgard with Midgard
2Old Norserǫst—
3Proto-Germanicrastōinterval; rest
4Proto-Indo-Europeanros-—
Every word from Proto-Indo-European ros- →Every word from Proto-Germanic rastō →Every word from Old Norse rǫst →