Where does “σμερί” come from?

σμερί (Ancient Greek) comes from Ancient Greek σμύρις — emery-powder, used by lapidaries.

Ancestry of “σμερί”, step by step

Step	Language	Word	Meaning
1	Ancient Greek	σμύρις	emery-powder, used by lapidaries

σμερί — Etymology, Origin & Word History | Etymology Explorer