Where does “չինար” come from?

չինար (Middle Armenian) comes from Persian چنار, from Middle Persian cynʾl — oriental plane tree.

Ancestry of “չինար”, step by step

Step	Language	Word	Meaning
1	Persian	چنار	chinar, oriental plane, "Platanus orientalis";...
2	Middle Persian	cynʾl	oriental plane tree

չինար — Etymology, Origin & Word History | Etymology Explorer