ἐφορμέω

A. lie moored at or over against a place, blockade it, λαθὼν τοὺς ἐπορμέοντας having escaped the blockading fleet, Hdt. 8.81, cf. Th. 8.75, X. An. 7.6.25; πεζῇ τε καὶ ναυσὶν ἐ. Th. 4.24: c. dat., ἐ. τῷ λιμένι Id. 7.3, cf. 3.31; ἐπὶ τῇ Μιλήτῳ Id. 8.30; ἐπὶ τῷ λιμένι X. HG 6.2.7; ἐπὶ τοῦ στόματος Plb. 1.46.5: c. acc., ἐ. ναυσὶ τὴν ἀκτήν App. BC 5.72: generally, lie by and watch, S. OC 812; ἐ. τοῖς καιροῖς D. 3.7; rely on, εἰκόσι καὶ πιθανοῖς Ph. 2.413,al.:—Pass., to be blockaded, Th. 1.142, 8.20.
Liddell, Scott & Jones
A Greek-English Lexicon, 1940
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