Where does “cekalnia” come from?

cekalnia (Polish) comes from Polish -alnia, from Polish -nia, from Old Polish -nia, from Proto-Slavic *-ьňà.

Ancestry of “cekalnia”, step by step

StepLanguageWordMeaning
1Polish-alniaforms names of designated rooms or shops
2Polish-niaforms feminine nouns, often but not always denoting places
3Old Polish-niaforms feminine nouns, often but not always denoting places
4Proto-Slavic*-ьňà
Every word from Proto-Slavic *-ьňàEvery word from Polish -niaEvery word from Polish -alnia