Where does “shitweed” come from?

shitweed (English) comes from English shit, from Middle Dutch schite, from Old Dutch skīta, from Old Saxon skiti, from Proto-Germanic skītaz, from Proto-Indo-European sḱeyd-, from Proto-Indo-European sḱēy-, from Proto-Germanic skaidą — to cut, part, spearate, divide; to cut, part,...

Ancestry of “shitweed”, step by step

shitweed traces back through two separate lines of ancestry.

via English shit

StepLanguageWordMeaning
1EnglishshitSolid excretory product evacuated from the...
2Middle Dutchschite
3Old Dutchskīta
4Old Saxonskiti
5Proto-Germanicskītaz
6Proto-Indo-Europeansḱeyd-to shade; to cut off; to part with, separate, cut...
7Proto-Indo-Europeansḱēy-to shine; to shimmer; shadow; luster, gloss,...
8Proto-Germanicskaidąseparation, distinction
9Proto-Indo-EuropeanskÁit-to cut, part, spearate, divide; to cut, part,...

via English weed

StepLanguageWordMeaning
1EnglishweedAny plant regarded as unwanted at the place...
2Middle Englishweed
3Old Englishwēodweed
4Proto-West Germanic*weudweed (unwanted plant)
Every word from Proto-Indo-European skÁit-Every word from Proto-Germanic skaidąEvery word from Proto-Indo-European sḱēy-