TRIREME

trireme. Trireme, n. a vessel with three benches of oars

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Tri″reme (?), n. [[L. triremis; tri- (see Tri-) + remus an oar, akin to E. row. See Row to propel with an oar.]] (Class. Antiq.) An ancient galley or vessel with tree banks, or tiers, of oars.