Reconstruction:Proto-Slavic/perъka

This Proto-Slavic entry contains reconstructed terms and roots. As such, the term(s) in this entry are not directly attested, but are hypothesized to have existed based on comparative evidence.

Proto-Slavic

Alternative reconstructions

*pьrъka

Etymology

Formed either from the verb *pьrati (“to fly, to propagate”) +‎ *-ъka or from the noun *pero (“feather”) +‎ *-ъka.

Noun

*perъka f

propeller
fin (of fish), paddle

Inflection

Declension of *perъka (hard a-stem)

	Singular	Dual	Plural
Nominative	*perъka	*perъcě	*perъky
Accusative	*perъkǫ	*perъcě	*perъky
Genitive	*perъky	*perъku	*perъkъ
Locative	*perъcě	*perъku	perъkasъ, perъkaxъ^*
Dative	*perъcě	*perъkama	*perъkamъ
Instrumental	perъkojǫ, perъkǫ^**	*perъkama	*perъkami
Vocative	*perъko	*perъcě	*perъky

^* -asъ is the expected Balto-Slavic form but is found only in some Old Czech documents; -axъ is found everywhere else and is formed by analogy with other locative plurals in -xъ.
^** The second form occurs in languages that contract early across /j/ (e.g. Czech), while the first form occurs in languages that do not (e.g. Russian).

Related terms

*pero (“feather”)
*pьrati (“to propel”)
*pьrxati (“to flutter (wings)”)

Derived terms

*perъkati (“to flap (fins), to slam”)

Descendants

East Slavic:
- Russian: пёрка (pjórka, “driller”)
South Slavic:
- Bulgarian: перка (perka)
- Macedonian: перка (perka)