ἀρουροφύλαξ
From LSJ
διὸ καὶ μεταλάττουσι τὴν φυσικὴν χρῆσιν εἰς τὴν παρὰ φύσιν αἱ δοκοῦσαι παρθένοι τῶν εἰδώλων → therefore those professing to be virgins of the idols even change the natural use into the unnatural (Origen, commentary on Romans 1:26)
German (Pape)
[Seite 358] ακος, ὁ, ein silberähnlicher Stein im Paktolus, Plut. de fluv. 7, 3, wo man αὐροφύλαξ ändern will.