Where does “течка” come from?

течка (Russian) comes from Russian течь, from Old East Slavic течи, from Proto-Slavic teťi, from Proto-Balto-Slavic tektej, from Proto-Indo-European tekʷ- — to run, to flow.

течка (Russian): estrus; rut

Definitions

  1. estrus; rut

Ancestry of “течка”, step by step

StepLanguageWordMeaning
1Russianтечьto flow, to run, to stream, to move; to leak;...
2Old East Slavicтечи—
3Proto-Slavicteťito flow, run
4Proto-Balto-Slavictektej—
5Proto-Indo-Europeantekʷ-to run, to flow
Every word from Proto-Indo-European tekʷ- →Every word from Proto-Balto-Slavic tektej →Every word from Proto-Slavic teťi →