Where does “puwertahan” come from?

puwertahan (Bikol Central) comes from Bikol Central puwerta, from Spanish puerta, from Old Spanish puerta, from Latin porta, from Proto-Indo-European per-, from Proto-Indo-European pr̥tós — passed , crossed.

Ancestry of “puwertahan”, step by step

Step	Language	Word	Meaning
1	Bikol Central	puwerta	—
2	Spanish	puerta	door; gate; doorway, doorstep, gateway
3	Old Spanish	puerta	—
4	Latin	porta	gate, especially of a city; entrance, passage,...
5	Proto-Indo-European	per-	before, in front; first; to go through
6	Proto-Indo-European	pr̥tós	passed , crossed

Every word from Proto-Indo-European pr̥tós →Every word from Proto-Indo-European per- →Every word from Latin porta →