Where does “Peștera” come from?

Peștera (English) comes from Romanian Peștera, from Romanian peșteră, from Bulgarian пещера, from Proto-Slavic peťera, from Proto-Slavic peťь, from Proto-Slavic peťi, from Proto-Balto-Slavic pektei, from Proto-Indo-European pékʷeti.

Ancestry of “Peștera”, step by step

StepLanguageWordMeaning
1RomanianPeșteracave
2Romanianpeșterăcave
3Bulgarianпещераcave, cavern
4Proto-Slavicpeťeracave
5Proto-Slavicpeťьoven
6Proto-Slavicpeťito bake; to get motivated, to put effort into, to...
7Proto-Balto-Slavicpekteito bake
8Proto-Indo-Europeanpékʷetito be cooking; to ripen
9Proto-Indo-Europeanpekʷ-to cook; to ripen
10Proto-Indo-Europeanh₃-ép-kʷ-
Every word from Proto-Indo-European h₃-ép-kʷ-Every word from Proto-Indo-European pekʷ-Every word from Proto-Indo-European pékʷeti