Where does “pinkeye” come from?

pinkeye (English) comes from English Eye, from English -some, from Middle English -som, from Old English sum, from Proto-West Germanic *sum, from Proto-Germanic sumaz, from Proto-Indo-European sem- — together, one.

pinkeye (English): A highly contagious form of conjunctivitis

Definitions

  1. A highly contagious form of conjunctivitis

Ancestry of “pinkeye”, step by step

pinkeye traces back through two separate lines of ancestry.

via English Eye

StepLanguageWordMeaning
1EnglishEyeA place name
2English-someCharacterized by some specific condition or...
3Middle English-somsome; having a specific quality
4Old Englishsumsome
5Proto-West Germanic*sumsome
6Proto-Germanicsumazsome (one), a certain (one)
7Proto-Indo-Europeansem-together, one

via English Pink

StepLanguageWordMeaning
1EnglishPinkAn operative of the Pinkerton National Detective...
2Dutchpingelento wrangle, to try to get a better price; to do...
3West Frisianpingelsmall item
Every word from Proto-Indo-European sem-Every word from Proto-Germanic sumazEvery word from Proto-West Germanic *sum