Where does “feathergrass” come from?

feathergrass (English) comes from English feather, from German feder, from Middle High German vëdere, from Old High German fedara, from Proto-West Germanic feþru, from Proto-Germanic feþrō, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

feathergrass (English): Any of various perennial hermaphroditic grasses...

Definitions

  1. Any of various perennial hermaphroditic grasses...

Ancestry of “feathergrass”, step by step

feathergrass traces back through two separate lines of ancestry.

via English feather

StepLanguageWordMeaning
1EnglishfeatherA branching, hair-like structure that grows on...
2Germanfederfeather
3Middle High Germanvëderefeather
4Old High Germanfedarafeather
5Proto-West Germanicfeþrufeather
6Proto-Germanicfeþrōfeather
7Proto-Indo-Europeanpéth₂r̥wing; feather
8Proto-Indo-Europeanpeth₂-to spread out; to fly

via English grass

StepLanguageWordMeaning
1EnglishgrassAny plant of the family Poaceae, characterized by...
2Middle EnglishgrasA grass; Any plant; especially a herbaceous one;...
3Old Englishgræsgrass
4Proto-West Germanicgrasgrass
5Proto-Germanicgrasągrass
6Proto-Indo-Europeanǵʰreh₁-to become green, grow; to grow; to green, to grow
Every word from Proto-Indo-European peth₂-