Where does “krewka” come from?

krewka (Polish) comes from Polish krew, from Old Polish krew, from Proto-Slavic kry, from Proto-Balto-Slavic krū́ˀs, from Proto-Indo-European kréwh₂s, from Proto-Indo-European krewh₂- — blood outside the body.

Ancestry of “krewka”, step by step

StepLanguageWordMeaning
1Polishkrewblood
2Old Polishkrewblood
3Proto-Slavickryblood
4Proto-Balto-Slavickrū́ˀsblood
5Proto-Indo-Europeankréwh₂sblood
6Proto-Indo-Europeankrewh₂-blood outside the body
Every word from Proto-Indo-European krewh₂- →Every word from Proto-Indo-European kréwh₂s →Every word from Proto-Balto-Slavic krū́ˀs →