Where does “Pichilemu” come from?

Pichilemu (English) comes from Spanish Pichilemu, from Mapuche lemu.

Ancestry of “Pichilemu”, step by step

Step	Language	Word	Meaning
1	Spanish	Pichilemu	—
2	Mapuche	lemu	—

Pichilemu — Etymology, Origin & Word History | Etymology Explorer