Where does “سر” come from?

سر (Ottoman Turkish) comes from Persian سر, from Middle Persian 𐭫𐭥𐭩𐭱𐭤, from Proto-Iranian *cŕ̥Hah, from Proto-Indo-Iranian ćŕ̥Has, from Proto-Indo-European ḱŕ̥h₂-os, from Proto-Indo-European ḱerh₂- — head, top; horn.

سر (Ottoman Turkish): head; chief, head, leading; end, summit, tip

Definitions

head; chief, head, leading; end, summit, tip

Ancestry of “سر”, step by step

Step	Language	Word	Meaning
1	Persian	سر	head; the topmost, foremost, or leading part;...
2	Middle Persian	𐭫𐭥𐭩𐭱𐭤	head; top, summit
3	Proto-Iranian	*cŕ̥Hah	—
4	Proto-Indo-Iranian	ćŕ̥Has	head, top
5	Proto-Indo-European	ḱŕ̥h₂-os	—
6	Proto-Indo-European	ḱerh₂-	head, top; horn

Words derived from “سر”

سر

Every word from Proto-Indo-European ḱerh₂- →Every word from Proto-Indo-European ḱŕ̥h₂-os →Every word from Proto-Indo-Iranian ćŕ̥Has →