Where does “twirn” come from?

twirn (Middle English) comes from Old English tweorn, from Proto-West Germanic twiʀn, from Proto-Germanic twiznaz, from Proto-Indo-European dwisnós, from Proto-Indo-European dwóh₁ — two.

Ancestry of “twirn”, step by step

twirn traces back through two separate lines of ancestry.

via Old English tweorn

StepLanguageWordMeaning
1Old Englishtweorntwine, thread
2Proto-West Germanictwiʀntwine, double thread
3Proto-Germanictwiznazthread, twine
4Proto-Indo-Europeandwisnósdouble
5Proto-Indo-Europeandwóh₁two

via Old English twirn

StepLanguageWordMeaning
1Old Englishtwirn
Every word from Proto-Indo-European dwóh₁Every word from Proto-Indo-European dwisnósEvery word from Proto-Germanic twiznaz