Where does “fousek” come from?

fousek (Czech) comes from Czech fous, from Proto-Slavic ǫsъ, from Proto-Slavic vǫdsъ, from Proto-Balto-Slavic wónsa, from Proto-Indo-European wondʰsom, from Proto-Indo-European wendʰ- — to wind, to turn.

Ancestry of “fousek”, step by step

StepLanguageWordMeaning
1Czechfouswhisker
2Proto-Slavicǫsъhair of a moustache; moustache
3Proto-Slavicvǫdsъ—
4Proto-Balto-Slavicwónsa—
5Proto-Indo-Europeanwondʰsom—
6Proto-Indo-Europeanwendʰ-to wind, to turn
Every word from Proto-Indo-European wendʰ- →Every word from Proto-Indo-European wondʰsom →Every word from Proto-Balto-Slavic wónsa →