δίκτυπος
From LSJ
θοῦ, Κύριε, φυλακὴν τῷ στόµατί µου καὶ θύραν περιοχῆς περὶ τὰ χείλη µου → set a guard over my mouth, Lord; keep watch over the door of my lips | set a guard, O Lord, over my mouth; keep watch over the door of my lips (Psalm 140:3, Septuagint version)
English (LSJ)
ον,
A double-sounding, ἠχώ Nonn.D.10.225.
German (Pape)
[Seite 630] ἠχώ, doppelt tönend, Nonn. D. 10, 225.
