ἑδροδιαστολεύς
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)
έως, ὁ,
A instrument for widening the passage of the anus, Heliod. ap. Orib.44.23.66, Leonidas ap.Paul.Aeg.6.78, Gal.19.110.