Where does “บุรี” come from?

บุรี (Thai) comes from Sanskrit पुर, from Sanskrit पर, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

บุรี (Thai): city; town

Definitions

Step	Language	Word	Meaning
1	Sanskrit	पुर	fortress, castle, city, town; the female...
2	Sanskrit	पर	other; more remote; distant, further, other
3	Proto-Indo-European	per-	before, in front; first; to go through
4	Proto-Indo-European	pr̥tós	passed , crossed

บุรี — Etymology, Origin & Word History | Etymology Explorer