Where does “cierzenko” come from?

cierzenko (Polish) comes from Polish cierń, from Old Polish ciernie, from Proto-Slavic tьrnъ, from Proto-Balto-Slavic tirnas, from Proto-Indo-European tr̥nós, from Proto-Indo-European (s)ter- — strong, firm, stiff, rigid; rigid, stiff; to...

Ancestry of “cierzenko”, step by step

StepLanguageWordMeaning
1Polishcierńthorn
2Old Polishcierniethornbush, bramble
3Proto-Slavictьrnъthorn; blackthorn, sloe-tree
4Proto-Balto-Slavictirnasthorn
5Proto-Indo-Europeantr̥nóssharp, stiff
6Proto-Indo-European(s)ter-strong, firm, stiff, rigid; rigid, stiff; to...
Every word from Proto-Indo-European (s)ter- →Every word from Proto-Indo-European tr̥nós →Every word from Proto-Balto-Slavic tirnas →