Where does “open-ers” come from?

open-ers (Middle English) comes from Old English openears, from Old English open, from Proto-West Germanic *opan, from Proto-Germanic upanaz, from Proto-Indo-European upó, from Proto-Indo-European h₃ewp-.

open-ers (Middle English): The fruit of the common medlar (Crataegus germanica, syn. Mespilus germanica)

Definitions

  1. The fruit of the common medlar (Crataegus germanica, syn. Mespilus germanica)

Ancestry of “open-ers”, step by step

StepLanguageWordMeaning
1Old Englishopenearsmedlar (fruit)
2Old Englishopenopen
3Proto-West Germanic*opanopen
4Proto-Germanicupanazopen
5Proto-Indo-Europeanupóunder, below
6Proto-Indo-Europeanh₃ewp-—
Every word from Proto-Indo-European h₃ewp- →Every word from Proto-Indo-European upó →Every word from Proto-Germanic upanaz →