τέχνασμα
From LSJ
μὴ δὶς πρὸς τὸν αὐτὸν λίθον πταίειν → do not stumble twice on the same stone
English (LSJ)
ατος, τό,
A anything made or done by art, handiwork, κέδρου τεχνάσματα, of a cedar coffin, E.Or.1053; τ. σιδήρου implement of iron, Opp.C.2.174, cf. Semon. (?) in PLit.Lond.53v.9, Hdn. 4.15.2. II artifice, trick, E.Or.1560, Ar.Th.198, X.HG6.4.7, Ezek.Exag.41.