Where does “کهربا” come from?

کهربا (Persian) comes from Persian کاه, from Persian کاستن, from Proto-Iranian kas-, from Proto-Indo-European kʷeḱ- — to see; to look.

کهربا (Persian): amber

Definitions

Step	Language	Word	Meaning
1	Persian	کاه	chaff; straw; hay
2	Persian	کاستن	—
3	Proto-Iranian	kas-	to be small, diminish, lessen
4	Proto-Indo-European	kʷeḱ-	to see; to look

کهربا — Etymology, Origin & Word History | Etymology Explorer