Body

finger

Source:*pьrstъProto-Slaviccertain

East Slavic and Polish generalized the word for the thumb; Czech and BCS keep *pьrstъ with a syllabic r.

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English

finger

Polish

palec

ˈpalɛts

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In all five languages

BCS script

Latin under Cyrillic

Russian
па́лецpalec
ˈpalʲɪtsdifferent word · Proto-Slavic *palьcь 'thumb'
The old перст is bookish, but survives in напёрсток 'thimble'.
Ukrainian
па́лецьpalecʹ
ˈpalʲɛtsʲdifferent word · Proto-Slavic *palьcь 'thumb'
Polish
palec
ˈpalɛtsdifferent word · Proto-Slavic *palьcь 'thumb'
*pьrstъ survives in naparstek 'thimble'.
Czech
prst
pr̩stinherited
Bosnian-Croatian-Serbian
prstпрст
pr̩stinherited
English
finger