Where does “Μύρρα” come from?

Μύρρα (Ancient Greek) comes from Arabic مُرّ — bitter, severe, sharp, painful; myrrh.

Ancestry of “Μύρρα”, step by step

Step	Language	Word	Meaning
1	Arabic	مُرّ	bitter, severe, sharp, painful; myrrh

Μύρρα — Etymology, Origin & Word History | Etymology Explorer