Henry George Liddell, Robert Scott, A Greek-English Lexicon

A.b 6 (Gortyn), ἡ (used by Hom. only in Il., always in pl.):—dyke, dam, “ποταμῷ πλήθοντι ἐοικὼς χειμάρρῳ, ὅς τ᾽ ὦκα ῥέων ἐκέδασσε γεφύρας: τὸν δ᾽ οὔτ᾽ ἄρ τε γέφυραι ἐεργμέναι ἰσχανόωσι” Il.5.88; cf. γεφυρόω: metaph., πολέμοιο γέφυραι, expld. by Sch.Il. as αἱ δίοδοι τῶν φαλάγγων, i. e. the open space between hostile armies, but more prob. limits of the battlefield, Il.4.371, 11.160, etc.; πόντου γ. of the Isthmus of Corinth, causeway through the sea, Pi.N.6.39, cf.I. 4(3).20; so, of the causeway between Athens and Eleusis, Carm.Pop.9; at the Euripus, Str.9.2.2.

II. after Hom., in sg., bridge, “γέφυραν ζευγνύναι” Hdt.4.97, cf. 1.75 (pl.); “γ. γαῖν δυοῖν ζευκτηρίαν” A. Pers.736; “γ. λῦσαι” X.An.2.4.17; “πόρον ὑπὲρ γεφυρῶν ἄγοντες” Lib. Or.11.243; also, of a tunnel, “ὑποστείχει γ.” Philostr.VA1.25.