Where does “pióruszko” come from?

pióruszko (Polish) comes from Polish pióro, from Proto-Slavic però, from Proto-Indo-European péth₂r̥, from Proto-Indo-European peth₂- — to spread out; to fly.

Ancestry of “pióruszko”, step by step

StepLanguageWordMeaning
1Polishpiórofeather, plume; quill; fountain pen
2Proto-Slavicperòwing
3Proto-Indo-Europeanpéth₂r̥wing; feather
4Proto-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 →