Where does “तक्षशिला” come from?

तक्षशिला (Hindi) comes from Sanskrit तक्षशिला, from Sanskrit शिला, from Proto-Indo-Iranian *ćHláH.

Ancestry of “तक्षशिला”, step by step

Step	Language	Word	Meaning
1	Sanskrit	तक्षशिला	Taxila
2	Sanskrit	शिला	stone, rock, crag; red arsenic; camphor
3	Proto-Indo-Iranian	*ćHláH	—

तक्षशिला — Etymology, Origin & Word History | Etymology Explorer