English
adderwort
adder + wort, as it was reputed to cure snakebite.
Proto-Indo-European *(s)neh₁- ‘to spin (thread), to sew’
…
Proto-Germanic *nadrǭ
Proto-West Germanic *nadrā
Old English nǣdre ‘snake’
Middle English nadder
English adder
Proto-Indo-European *wréh₂ds ‘a root’
Proto-Germanic *wrōts ‘a root’
Proto-West Germanic *wurti ‘a root’
Old English wyrt ‘a plant’
Middle English wort ‘any herb or plant’
English wort
Today it means
noun Common bistort (Bistorta officinalis, syn. Persicaria bistorta) or snakeweed.
Language periods are conventional ranges, not dates for this word.
Etymograph / adderwort