Where does “åder” come from?

åder (Norwegian Nynorsk) comes from Old Norse æðr, from Proto-Germanic ēþrō, from Proto-Indo-European ēt-er- — stomach, intestines.

Ancestry of “åder”, step by step

StepLanguageWordMeaning
1Old Norseæðrvein; eider
2Proto-Germanicēþrōvein
3Proto-Indo-Europeanēt-er-stomach, intestines
Every word from Proto-Indo-European ēt-er- →Every word from Proto-Germanic ēþrō →Every word from Old Norse æðr →