Liddell-Scott-Jones

γέφυρα (gephura) a dam ^G:N-F

γέφυρα

(Boeotian dialect βέφυρα [Refs 5th c.BC+], Laconian dialect δίφουρα [Refs 5th c.AD+], Cretan dialect δέφυρα [Refs 8th c.BC+]:—dyke, dam, ποταμῷ πλήθοντι ἐοικὼς χειμάρρῳ, ὅς τ᾽ ὦκα ῥέων ἐκέδασσε γεφύρας· τὸν δ᾽ οὔτ᾽ ἄρ τε γέφυραι ἐεργμέναι ἰσχανόωσι [Refs 8th c.BC+]; compare γεφυρόω: metaphorically, πολέμοιο γέφυραι, explained by [Refs 8th c.BC+], i. e. the open space between hostile armies, but more probably limits of the battlefield, [Refs 8th c.BC+]; πόντου γ. of the Isthmus of Corinth, causeway through the sea, [Refs 5th c.BC+]; so, of the causeway between Athens and Eleusis, [Refs 1st c.BC+]

__II after [Refs 8th c.BC+], in singular, bridge, γέφυραν ζευγνύναι [Refs 5th c.BC+]; also, of a tunnel, ὑποστείχει γ. [Refs 2nd c.AD+]