пещера

From Proto-Slavic *peťera, from *peťь (“oven”) + *-era, from *peťi (“to bake”) + *-tь.

• IPA^(key): /pɛʃtɛˈra/

пещера • (pešterá) f

1. cave, cavern

пещера • (peštera) f

1. cave
2. dungeon

Borrowed from Old Church Slavonic пещера (peštera, “cave”), from Proto-Slavic *peťera, from *peťь (“oven”) + *-era, from *peťi (“to bake”) + *-tь. Doublet of печо́ра (pečóra), the inherited East Slavic form.

• IPA^(key): [pʲɪˈɕːerə]

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пеще́ра • (peščéra) f inan (genitive пеще́ры, nominative plural пеще́ры, genitive plural пеще́р)

1. cave

   он два́дцать лет в пеще́ре провел ― on dvádcatʹ let v peščére provel ― he spent twenty years in a cave

• печо́ра (pečóra)

• пеще́ристый (peščéristyj)
• пеще́рный (peščérnyj)

• Vasmer (Fasmer), Max (Maks) (1964–1973), “пещера”, in Etimologičeskij slovarʹ russkovo jazyka [Etymological Dictionary of the Russian Language] (in Russian), translated from German and supplemented by Trubačóv Oleg, Moscow: Progress