Where does “żabsko” come from?

żabsko (Polish) comes from Polish Żaba, from Ukrainian жаба, from Proto-Slavic žaba, from Proto-Slavic žěba — chaffinch.

Ancestry of “żabsko”, step by step

StepLanguageWordMeaning
1PolishŻabafrog, especially any true frog or ranid
2Ukrainianжабаfrog; quinsy, tonsillitis
3Proto-Slavicžabafrog, toad
4Proto-Slavicžěbachaffinch
Every word from Proto-Slavic žěba →Every word from Proto-Slavic žaba →Every word from Ukrainian жаба →