μεταλλ-εία · metall-eia — LSJ
searching for metals and the like, mining, Pl. Criti. 114e, Lg. 842d (pl.), Str. 3.2.9, al.: in pl., concrete, mines, Id. 3.2.3.
mining operations in a siege, D.S. 16.74.
underground channel, Pl. Lg. 761c.
metaph., μεγαλόδωρος ἡ μ. τοῦ ἀληθοῦς Max.Tyr. 17.2.