Where does “hvorost” come from?

hvorost (English) comes from Russian хворост, from Old East Slavic хворостъ, from Proto-Slavic xvorstъ, from Proto-Balto-Slavic kšwáršta, from Proto-Indo-European (s)kworstom.

Ancestry of “hvorost”, step by step

StepLanguageWordMeaning
1Russianхворостbrushwood; straws, twiglets
2Old East Slavicхворостъ
3Proto-Slavicxvorstъbrushwood
4Proto-Balto-Slavickšwáršta
5Proto-Indo-European(s)kworstom
Every word from Proto-Indo-European (s)kworstomEvery word from Proto-Balto-Slavic kšwárštaEvery word from Proto-Slavic xvorstъ