Where does “سربراه” come from?

سربراه (Classical Persian) comes from Classical Persian سر, from Sanskrit शूल, from Proto-Indo-Aryan śúHlas, from Proto-Indo-Iranian ćúHlas, from Proto-Indo-European ḱúh₃-los, from Proto-Indo-European ḱeh₃- — to sharpen, whet; sharpen.

Ancestry of “سربراه”, step by step

StepLanguageWordMeaning
1Classical Persianسر—
2Sanskritशूलany sharp instrument or pointed dart, lance,...
3Proto-Indo-AryanśúHlas—
4Proto-Indo-IranianćúHlas—
5Proto-Indo-Europeanḱúh₃-los—
6Proto-Indo-Europeanḱeh₃-to sharpen, whet; sharpen
Every word from Proto-Indo-European ḱeh₃- →Every word from Proto-Indo-European ḱúh₃-los →Every word from Proto-Indo-Iranian ćúHlas →