Where does “yeknā-” come from?

yeknā- (Proto-Balto-Slavic) comes from Proto-Indo-European yekʷ-né-s, from Proto-Indo-European Hyékʷr̥ — liver.

Ancestry of “yeknā-”, step by step

StepLanguageWordMeaning
1Proto-Indo-Europeanyekʷ-né-s—
2Proto-Indo-EuropeanHyékʷr̥liver
Every word from Proto-Indo-European Hyékʷr̥ →Every word from Proto-Indo-European yekʷ-né-s →