Where does “arraia” come from?

arraia (Old Portuguese) comes from Arabic رَعِيَّة — subject; herd, flock; citizens, flock.

Ancestry of “arraia”, step by step

Step	Language	Word	Meaning
1	Arabic	رَعِيَّة	subject; herd, flock; citizens, flock

arraia — Etymology, Origin & Word History | Etymology Explorer