Where does “threeway” come from?

threeway (English) comes from English three, from Middle English thre, from Old English þrī, from Proto-West Germanic þrīʀ, from Proto-Germanic þrīz, from Proto-Indo-European *tréyes.

threeway (English): a sexual act involving three people

Definitions

  1. a sexual act involving three people

Ancestry of “threeway”, step by step

threeway traces back through two separate lines of ancestry.

via English three

StepLanguageWordMeaning
1EnglishthreeA numerical value after two and before four....
2Middle Englishthrethree
3Old Englishþrīthree
4Proto-West Germanicþrīʀthree
5Proto-Germanicþrīzthree
6Proto-Indo-European*tréyes—

via English Way

StepLanguageWordMeaning
1EnglishWayChristianity
2Middle Englishway—
3Old Englishweġway; path; way, road, path
4Proto-West Germanicwegway, road
5Proto-Germanicwēgazwave; sea
6Proto-Indo-Europeanweǵʰ-to bring; to transport
Every word from Proto-Indo-European *tréyes →Every word from Proto-Germanic þrīz →Every word from Proto-West Germanic þrīʀ →