Where does “сърничка” come from?

сърничка (Bulgarian) comes from Bulgarian сърна, from Proto-Slavic sьrna, from Proto-Balto-Slavic śírˀnāˀ, from Proto-Indo-European ḱr̥h₂-néh₂, from Proto-Indo-European ḱerh₂- — head, top; horn.

Ancestry of “сърничка”, step by step

StepLanguageWordMeaning
1Bulgarianсърнаroe
2Proto-Slavicsьrnaroe; chamois
3Proto-Balto-Slavicśírˀnāˀhorn
4Proto-Indo-Europeanḱr̥h₂-néh₂
5Proto-Indo-Europeanḱerh₂-head, top; horn
Every word from Proto-Indo-European ḱerh₂-Every word from Proto-Indo-European ḱr̥h₂-néh₂Every word from Proto-Balto-Slavic śírˀnāˀ