Where does “hranolek” come from?

hranolek (Czech) comes from Czech hranol, from Czech hrana, from Old Czech hrana, from Proto-Slavic granь, from Proto-Slavic -nь — Deverbative, creates nouns.

Ancestry of “hranolek”, step by step

StepLanguageWordMeaning
1Czechhranolprism
2Czechhranaedge; death knell
3Old Czechhrana—
4Proto-Slavicgranьside, edge
5Proto-Slavic-nьDeverbative, creates nouns
Every word from Proto-Slavic -nь →Every word from Proto-Slavic granь →Every word from Old Czech hrana →
hranolek — Etymology, Origin & Word History | Etymology Explorer