Where does “elfwort” come from?

elfwort (English) comes from English wort, from Middle English wort, from Old English wyrt, from Old English bisċop, from Latin episcopus, from Ancient Greek ἐπίσκοπος, from Ancient Greek ἐπισκοπέω, from Ancient Greek ἐπι- — to be hot; to burn.

Ancestry of “elfwort”, step by step

elfwort traces back through two separate lines of ancestry.

via English wort

StepLanguageWordMeaning
1EnglishwortA plant; herb; vegetable; Any of various plants...
2Middle EnglishwortA plant; Wort or an analogous mixture
3Old Englishwyrtplant; herb; wort
4Old Englishbisċopbishop
5Latinepiscopusan overseer, supervisor, bishop in a Christian...
6Ancient Greekἐπίσκοποςwatcher, guardian; scout, watch; overseer,...
7Ancient GreekἐπισκοπέωI watch over
8Ancient Greekἐπι-on, upon, on top of, all over, covering; on,...
9Ancient Greekἐπίas well, besides; For usage in composition, see...
10Ancient GreekἩμέρα
11Ancient Greekἦμαρday; by day; midday
12Proto-Hellenicā́mərday
13Proto-Indo-Europeanh₂eh₃mr̥heat
14Proto-Indo-Europeanh₂eh₃-to be hot; to burn

via English elf

StepLanguageWordMeaning
1EnglishelfA luminous spirit presiding over nature and...
2Middle Englishelfelf, fairy; spirit, shade
3Old Englishielfelf
4Proto-West Germanicalbielf, fairy
5Proto-Germanicalbīriver
6LatinAlbis
7LatinAlbeus
Every word from Proto-Indo-European h₂eh₃-Every word from Proto-Indo-European h₂eh₃mr̥Every word from Proto-Hellenic ā́mər