Where does “peroutka” come from?

peroutka (Czech) comes from Czech peruť, from Czech pero, from Proto-Slavic però, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Ancestry of “peroutka”, step by step

StepLanguageWordMeaning
1Czechperuťwing (of a bird)
2Czechperofeather; pen
3Proto-Slavicperòwing
4Proto-Indo-Europeanpéth₂r̥wing; feather
5Proto-Indo-Europeanpeth₂-to spread out; to fly
Every word from Proto-Indo-European peth₂- →Every word from Proto-Indo-European péth₂r̥ →Every word from Proto-Slavic però →