Where does “krupniczek” come from?

krupniczek (Polish) comes from Polish Krupnik, from Polish Krupa, from Proto-Slavic krupa, from Proto-Balto-Slavic kraupāˀ, from Proto-Indo-European krowp-eh₂, from Proto-Indo-European krewp-, from Proto-Indo-European krew- — to fall, collapse; scab; to fall, break, bruise.

Ancestry of “krupniczek”, step by step

StepLanguageWordMeaning
1PolishKrupnikkrupnik
2PolishKrupagroats
3Proto-Slavickrupagrainy substance, groats, hail
4Proto-Balto-Slavickraupāˀ
5Proto-Indo-Europeankrowp-eh₂
6Proto-Indo-Europeankrewp-scab, crust; to become encrusted
7Proto-Indo-Europeankrew-to fall, collapse; scab; to fall, break, bruise
Every word from Proto-Indo-European krew-Every word from Proto-Indo-European krewp-Every word from Proto-Indo-European krowp-eh₂