Where does “кровъ” come from?

кровъ (Old East Slavic) comes from Old East Slavic крꙑ, 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 “кровъ”, step by step

кровъ traces back through two separate lines of ancestry.

via Old East Slavic крꙑ

StepLanguageWordMeaning
1Old East Slavicкрꙑblood
2Proto-Slavickryblood
3Proto-Balto-Slavickrū́ˀsblood
4Proto-Indo-Europeankréwh₂sblood
5Proto-Indo-Europeankrewh₂-blood outside the body

via Proto-Slavic krovъ

StepLanguageWordMeaning
1Proto-Slavickrovъroof
2Proto-Balto-Slavickrawas—

Words derived from “кровъ”

Every word from Proto-Indo-European krewh₂- →Every word from Proto-Indo-European kréwh₂s →Every word from Proto-Balto-Slavic krū́ˀs →