Where does “لاهور” come from?

لاهور (Ottoman Turkish) comes from Arabic لَاهُور, from Urdu لاہور, from Sanskrit लवपुरी, from Sanskrit पुरी, from Sanskrit पर, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “لاهور”, step by step

Step	Language	Word	Meaning
1	Arabic	لَاهُور	—
2	Urdu	لاہور	—
3	Sanskrit	लवपुरी	—
4	Sanskrit	पुरी	fortress, castle, town; name of a town; the...
5	Sanskrit	पर	other; more remote; distant, further, other
6	Proto-Indo-European	per-	before, in front; first; to go through
7	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Sanskrit पर →