Body

hair (on the head)

Source:*volsъProto-Slavic · “a hair”certain

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English

hair (on the head)

Polish

włosy

ˈvwɔsɨ

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In all five languages

BCS script

Latin under Cyrillic

Russian
во́лосыvolosy
ˈvoləsɨinherited
Plural; во́лос is a single hair.
Ukrainian
воло́ссяvolossja
ʋɔˈlɔsʲːainherited
A collective noun; волоси́на is a single hair.
Polish
włosy
ˈvwɔsɨinherited
Czech
vlasy
ˈvlasɪinherited
Bosnian-Croatian-Serbian
kosaкоса
ˈkosadifferent word · Proto-Slavic *kosa 'braid'
BCS vlas means a single hair; Russian коса́ and Polish kosa mean 'braid' or 'scythe'.
English
hair (on the head)