Where does “αργός σίδηρος” come from?

αργός σίδηρος (Greek) comes from Ancient Greek [[ἀργός]] [[ἔργόν]].

αργός σίδηρος (Greek): pig iron

Definitions

Step	Language	Word	Meaning
1	Ancient Greek	[[ἀργός]] [[ἔργόν]]	—

αργός σίδηρος — Etymology, Origin & Word History | Etymology Explorer