Where does “Palacpac” come from?

Palacpac (Tagalog) comes from Tagalog palakpak, from Bikol Central pakpak, from Proto-Austronesian *pakpak.

Ancestry of “Palacpac”, step by step

Step	Language	Word	Meaning
1	Tagalog	palakpak	—
2	Bikol Central	pakpak	—
3	Proto-Austronesian	*pakpak	—

Palacpac — Etymology, Origin & Word History | Etymology Explorer