Where does “czacha” come from?

czacha (Polish) comes from Polish czaszka, from Proto-Slavic *čašьka — small cup.

Ancestry of “czacha”, step by step

StepLanguageWordMeaning
1Polishczaszkaskull
2Proto-Slavic*čašьkasmall cup
Every word from Proto-Slavic *čašьka →Every word from Polish czaszka →