Where does “alfinete” come from?

alfinete (Portuguese) comes from Andalusian Arabic اَلْخِلَال, from Arabic خِلَال — pin, peg.

alfinete (Portuguese): pin; safety pin

Definitions

Step	Language	Word	Meaning
1	Andalusian Arabic	اَلْخِلَال	—
2	Arabic	خِلَال	pin, peg

alfinete — Etymology, Origin & Word History | Etymology Explorer