Where does “oblak” come from?

oblak (Old Czech) comes from Proto-Slavic obolkъ, from Proto-Slavic vȏlkъ — portage?, dragnet?.

Ancestry of “oblak”, step by step

StepLanguageWordMeaning
1Proto-Slavicobolkъcloud
2Proto-Slavicvȏlkъportage?, dragnet?

Words derived from “oblak”

Every word from Proto-Slavic vȏlkъ →Every word from Proto-Slavic obolkъ →
oblak — Etymology, Origin & Word History | Etymology Explorer