Where does “*бѣлоѫсъ” come from?

*бѣлоѫсъ (Old East Slavic) comes from Proto-Slavic *běloǫsъ, from Proto-Slavic bělъ, from Proto-Indo-European bʰēlHs — white surface or stain.

Ancestry of “*бѣлоѫсъ”, step by step

StepLanguageWordMeaning
1Proto-Slavic*běloǫsъwhite-moustached, whitebeard
2Proto-Slavicbělъwhite
3Proto-Indo-EuropeanbʰēlHswhite surface or stain

Words derived from “*бѣлоѫсъ”

Every word from Proto-Indo-European bʰēlHs →Every word from Proto-Slavic bělъ →Every word from Proto-Slavic *běloǫsъ →