Where does “rödtunga” come from?

rödtunga (Swedish) comes from Swedish röd, from Old Swedish rø̄þer, from Old Norse rauðr, from Old English dūn, from Proto-Germanic *dūnā, from Proto-Celtic dūnom, from Proto-Indo-European dʰewh₂- — smoke; mist, haze.

rödtunga (Swedish): witch flounder (Glyptocephalus cynoglossus)

Definitions

  1. witch flounder (Glyptocephalus cynoglossus)

Ancestry of “rödtunga”, step by step

rödtunga traces back through two separate lines of ancestry.

via Swedish röd

StepLanguageWordMeaning
1Swedishrödred; of or pertaining to leftist politics and...
2Old Swedishrø̄þer
3Old Norserauðrred
4Old Englishdūnhill, down; hill, dune; hill, mountain
5Proto-Germanic*dūnā
6Proto-Celticdūnomstronghold, rampart
7Proto-Indo-Europeandʰewh₂-smoke; mist, haze

via Swedish tunga

StepLanguageWordMeaning
1Swedishtungaa tongue; a language, speech; weight
2Old Swedishtungatongue; speech, language
3Old Norsetungatongue
4Proto-Germanictungǭtongue; speech, language
5Proto-Indo-Europeandn̥ǵʰwéh₂stongue
Every word from Proto-Indo-European dʰewh₂-Every word from Proto-Celtic dūnomEvery word from Proto-Germanic *dūnā