Where does “oatstraw” come from?

oatstraw (English) comes from English straw, from Middle English straw, from Old English strēaw, from Proto-West Germanic strau, from Proto-Germanic strawą, from Proto-Indo-European strew-, from Proto-Indo-European sterh₃-, from Proto-Indo-European ster- — sterile, infertile.

oatstraw (English): Straw from the oat plant

Definitions

  1. Straw from the oat plant

Ancestry of “oatstraw”, step by step

oatstraw traces back through two separate lines of ancestry.

via English straw

StepLanguageWordMeaning
1EnglishstrawA dried stalk of a cereal plant; Such dried...
2Middle EnglishstrawThe remaining plant material after cultivation;...
3Old Englishstrēawstraw
4Proto-West Germanicstraustraw
5Proto-Germanicstrawąstraw
6Proto-Indo-Europeanstrew-to spread, to strew
7Proto-Indo-Europeansterh₃-to spread, extend, stretch out
8Proto-Indo-Europeanster-sterile, infertile

via English oat

StepLanguageWordMeaning
1EnglishoatWidely cultivated cereal grass, typically "Avena...
2Middle EnglishoteThe oat plant; A grain of this plant
3Old Englishāteoat
4Proto-Balticaitā
5Proto-Germanicaitǭswelling; swelling; gland; nodule
6Proto-Indo-Europeanh₁eid-to swell
Every word from Proto-Indo-European ster-