Where does “жрьнꙑ” come from?

жрьнꙑ (Old Church Slavonic) comes from Proto-Slavic žьrny, from Proto-Balto-Slavic *gírˀnūˀs, from Proto-Indo-European gʷréh₂wō, from Proto-Indo-European gʷréh₂us, from Proto-Indo-European -us — Forms adjectives from Caland system roots.

жрьнꙑ (Old Church Slavonic): millstone

Definitions

  1. millstone

Ancestry of “жрьнꙑ”, step by step

StepLanguageWordMeaning
1Proto-Slavicžьrnymillstone
2Proto-Balto-Slavic*gírˀnūˀsmillstone
3Proto-Indo-Europeangʷréh₂wōquern, mill-stone
4Proto-Indo-Europeangʷréh₂usheavy
5Proto-Indo-European-usForms adjectives from Caland system roots
Every word from Proto-Indo-European -us →Every word from Proto-Indo-European gʷréh₂us →Every word from Proto-Indo-European gʷréh₂wō →