Where does “خندق” come from?

خندق (Persian) comes from Arabic خَنْدَق, from Pahlavi *handag.

خندق (Persian): moat

Definitions

Step	Language	Word	Meaning
1	Arabic	خَنْدَق	ditch”, “moat
2	Pahlavi	*handag	—

خندق — Etymology, Origin & Word History | Etymology Explorer