μολυβδοτήξ
From LSJ
δὶς ἐξαμαρτεῖν ταὐτὸν οὐκ ἀνδρὸς σοφοῦ → a wise man should not keep making the same mistake, a wise man should not repeat the same mistake, doing twice the same mistake is not a wise man's doing, making the same mistake twice does not befit the wise, making the same mistake twice does not belong to a man who is wise, making the same mistake twice does not belong to a wise man, the wise man does not make the same mistake twice, to commit the same sin twice is not a sign of a wise man, it is unwise to err twice
English (LSJ)
ῆκος, ὁ,
A melter of lead, Theognost.Can.40: μολιβδοτήξ, Hdn.Gr. ap. Choerob. in Theod.1.291: μολιβδότηξ, Anon. ap. eund.ibid.
German (Pape)
[Seite 200] Blei schmelzend, Theogn. B. A. 1340.