Where does “ast” come from?

ast (Middle Persian) comes from Old Persian 𐎠𐎼𐏁𐎫𐎡 — spear.

Ancestry of “ast”, step by step

Step	Language	Word	Meaning
1	Old Persian	𐎠𐎼𐏁𐎫𐎡	spear

ast — Etymology, Origin & Word History | Etymology Explorer