Where does “eder” come from?

eder (Middle English) comes from Old English edor, from Proto-Germanic edaraz, from Proto-Indo-European edh-.

Ancestry of “eder”, step by step

eder traces back through two separate lines of ancestry.

via Old English edor

StepLanguageWordMeaning
1Old Englishedorenclosure, hedge, fence; shelter, dwelling,...
2Proto-Germanicedarazenclosure; shelter; border, edge, rim
3Proto-Indo-Europeanedh-—

via Old English eder

StepLanguageWordMeaning
1Old Englisheder—
Every word from Proto-Indo-European edh- →Every word from Proto-Germanic edaraz →Every word from Old English edor →