Where does “облаче” come from?

облаче (Bulgarian) comes from Bulgarian облак, from Old Church Slavonic облакъ, from Proto-Slavic obolkъ, from Proto-Slavic vȏlkъ — portage?, dragnet?.

Ancestry of “облаче”, step by step

StepLanguageWordMeaning
1Bulgarianоблакcloud
2Old Church Slavonicоблакъcloud
3Proto-Slavicobolkъcloud
4Proto-Slavicvȏlkъportage?, dragnet?
Every word from Proto-Slavic vȏlkъ →Every word from Proto-Slavic obolkъ →Every word from Old Church Slavonic облакъ →