Where does “млечнобял” come from?

млечнобял (Bulgarian) comes from Bulgarian бя́л, from Old Church Slavonic бѣлъ, from Proto-Slavic bělъ, from Proto-Indo-European bʰēlHs — white surface or stain.

млечнобял (Bulgarian): milk-white

Definitions

  1. milk-white

Ancestry of “млечнобял”, step by step

млечнобял traces back through two separate lines of ancestry.

via Bulgarian бя́л

StepLanguageWordMeaning
1Bulgarianбя́лwhite
2Old Church Slavonicбѣлъwhite
3Proto-Slavicbělъwhite
4Proto-Indo-EuropeanbʰēlHswhite surface or stain

via Bulgarian мле́чен

StepLanguageWordMeaning
1Bulgarianмле́ченmilky, milk, dairy products derived from or containing milk
2Proto-Slavicmelčьnъmilk, dairy
Every word from Proto-Indo-European bʰēlHs →Every word from Proto-Slavic bělъ →Every word from Old Church Slavonic бѣлъ →