συντεχνάομαι
From LSJ
μέγα γὰρ τὸ τῆς θαλάσσης κράτος → great is the power of the country that controls the sea, control of the sea is a great thing, the dominion of the sea is a great matter, the rule of the sea is a great matter, the rule of the sea is indeed a great matter, control of the sea is a paramount advantage
English (LSJ)
Med.,
A assist in the art of shipbuilding, Id.Demetr.43.
Greek (Liddell-Scott)
συντεχνάομαι: ἀποθετ., βοηθῶ εἰς τὴν τέχνην (τῆς ναυπηγίας), Πλουτ. Δημήτρ. 43.
Dutch (Woordenboekgrieks.nl)
συν-τεχνάομαι helpen bij werkzaamheden.
Russian (Dvoretsky)
συντεχνάομαι: участвовать в постройке, помогать своим искусством строить (τι Plut.).