Where does “rorqual” come from?

rorqual (Portuguese) comes from Norwegian Nynorsk røyrkval, from Old Norse reyðarhvalr, from Old Norse reyðr, from Old Norse rauðr, from Old English dūn, from Proto-Germanic *dūnā, from Proto-Celtic dūnom, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

rorqual (Portuguese): rorqual any whale species with long skin folds below mouth

Definitions

  1. rorqual any whale species with long skin folds below mouth

Ancestry of “rorqual”, step by step

StepLanguageWordMeaning
1Norwegian Nynorskrøyrkvalfin whale
2Old Norsereyðarhvalrrorqual whale
3Old Norsereyðrrorqual, fin whale
4Old Norserauðrred
5Old Englishdūnhill, down; hill, dune; hill, mountain
6Proto-Germanic*dūnā—
7Proto-Celticdūnomstronghold, rampart
8Proto-Indo-Europeandʰewh₂-smoke; mist, haze
Every word from Proto-Indo-European dʰewh₂- →Every word from Proto-Celtic dūnom →Every word from Proto-Germanic *dūnā →