Where does “મલમ” come from?

મલમ (Gujarati) comes from Classical Persian مرهم, from Arabic مَرْهَم.

Ancestry of “મલમ”, step by step

Step	Language	Word	Meaning
1	Classical Persian	مرهم	—
2	Arabic	مَرْهَم	—

મલમ — Etymology, Origin & Word History | Etymology Explorer