Where does “watergrass” come from?

watergrass (English) comes from English water, from Middle English water, from Old English wæter, from Proto-West Germanic watar, from Proto-Germanic watōr, from Proto-Indo-European wódr̥, from Proto-Indo-European wed-, from Proto-Indo-European wey- — to wither; fade; to move, go ahead; to be strong;...

watergrass (English): Any of various grasses in the genus "Echinochloa"...

Definitions

  1. Any of various grasses in the genus "Echinochloa"...

Ancestry of “watergrass”, step by step

watergrass traces back through two separate lines of ancestry.

via English water

StepLanguageWordMeaning
1EnglishwaterA substance found at room temperature and...
2Middle Englishwaterwater; water vapour, condensation; lake, pond,...
3Old Englishwæterwater
4Proto-West Germanicwatarwater
5Proto-Germanicwatōrwater
6Proto-Indo-Europeanwódr̥water
7Proto-Indo-Europeanwed-water
8Proto-Indo-Europeanwey-to wither; fade; to move, go ahead; to be strong;...

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 wey-Every word from Proto-Indo-European wed-Every word from Proto-Indo-European wódr̥