Where does “blanketweed” come from?

blanketweed (English) comes from English blanket, from Middle English blanket, from Old French blanquette, from Old French blanc, from Late Latin blancus, from Frankish blank, from Proto-Germanic *blank, from Proto-Germanic blankaz — to shine, white; to shine, burn, scorch.

blanketweed (English): a filamentous alga often found in ponds

Definitions

  1. a filamentous alga often found in ponds

Ancestry of “blanketweed”, step by step

blanketweed traces back through two separate lines of ancestry.

via English blanket

StepLanguageWordMeaning
1EnglishblanketA heavy, loosely woven fabric, usually large and...
2Middle Englishblanket
3Old Frenchblanquette
4Old Frenchblancwhite
5Late Latinblancuswhite
6Frankishblankbright; gleaming, white, blinding; bright,...
7Proto-Germanic*blank
8Proto-Germanicblankazbright, shining, white, gleaming, blinding
9Proto-Indo-Europeanbhleg-to shine, white; to shine, burn, scorch

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 bhleg-Every word from Proto-Germanic blankazEvery word from Proto-Germanic *blank