Where does “eadar-aghaidh” come from?

eadar-aghaidh (Scottish Gaelic) comes from Scottish Gaelic eadar, from English Eider, from Swedish ejder, from Low German eider, from Icelandic æður, from Old Norse æðr, from Proto-Germanic ēþrō, from Proto-Indo-European ēt-er- — stomach, intestines.

eadar-aghaidh (Scottish Gaelic): interface

Definitions

  1. interface

Ancestry of “eadar-aghaidh”, step by step

eadar-aghaidh traces back through two separate lines of ancestry.

via Scottish Gaelic eadar

StepLanguageWordMeaning
1Scottish Gaeliceadarbetween
2EnglishEiderthe boundary between Schleswig and Holstein
3Swedishejdereider; common eider, the species "Somateria...
4Low Germaneider—
5Icelandicæðureider; vein; wadable
6Old Norseæðrvein; eider
7Proto-Germanicēþrōvein
8Proto-Indo-Europeanēt-er-stomach, intestines

via Scottish Gaelic aghaidh

StepLanguageWordMeaning
1Scottish Gaelicaghaidhface; surface; front
2Old Irishagadface; honour; surface
3Old Irishaigidto drive
4Proto-Celticagetito drive
5Proto-Indo-Europeanh₂éǵetito be driving
6Proto-Indo-Europeanh₂eǵ-to drive
Every word from Proto-Indo-European ēt-er- →Every word from Proto-Germanic ēþrō →Every word from Old Norse æðr →