Where does “трнка” come from?

трнка (Macedonian) comes from Macedonian трн, 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 “трнка”, step by step

StepLanguageWordMeaning
1Macedonianтрнthorn
2Proto-Slavictьrnъthorn; blackthorn, sloe-tree
3Proto-Balto-Slavictirnasthorn
4Proto-Indo-Europeantr̥nóssharp, stiff
5Proto-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 →