μεταλλεῖον
From LSJ
ὅταν δὲ τἄμ' ἀθυμήσαντ' ἴδῃς, σύ μου τὸ δεινὸν καὶ διαφθαρὲν φρενῶν ἴσχναινε παραμυθοῦ θ' → whenever you see me despondent over my situation, do what you can to lessen and relieve what is wild and senseless in my thinking | whenever you see me despondent, you must cure the grim derangement of my mind and encourage me
English (LSJ)
τό, in plural, minerals, σίδηρος καὶ χαλκὸς καὶ πάντα τὰ μ. Pl.Lg.678d.
German (Pape)
[Seite 149] τό, das Metall, Plat. Legg. III, 678 d, σίδηρος καὶ χαλκὸς καὶ πάντα τὰ μεταλλεῖα.
Greek (Liddell-Scott)
μεταλλεῖον: τό, = μέταλλον, Πλάτ. Νόμ. 678D.
Russian (Dvoretsky)
μεταλλεῖον: τό металл (σίδηρος καὶ χαλκὸς καὶ πάντα τὰ μεταλλεῖα Plat.).