Where does “kamienny” come from?
kamienny (Polish) comes from Polish Kamień, from Russian ка́мень, from Old East Slavic камень, from Proto-Slavic kamy, from Proto-Indo-European h₂éḱmō, from Proto-Indo-European h₂eḱ- — sharp.
kamienny (Polish): stone; stonen
Ancestry of “kamienny”, step by step