Where does “fernwort” come from?

fernwort (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 “fernwort”, step by step

fernwort 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 fern

StepLanguageWordMeaning
1EnglishfernAny of a group of some twenty thousand species of...
2Middle Englishfernfern plant of the division
3Old Englishfearnfern
4Proto-West Germanicfarnfern
5Proto-Indo-Europeanpornómfeather, wing; fern, leaf
6Proto-Indo-Europeanper-before, in front; first; to go through
7Proto-Indo-Europeanpr̥tóspassed , crossed
Every word from Proto-Indo-European h₂eh₃-