μὴ δὶς πρὸς τὸν αὐτὸν λίθον πταίειν → do not stumble twice on the same stone
νεροσέλινον: τό, ὡς καὶ νῦν, τὸ ἐν ὕδασι φυόμενον ἀγριοσέλινον, Δουκάγγ.