trireme Meaning, Definition & Usage

  1. noun ancient Greek or Roman galley or warship having three tiers of oars on each side

WordNet

Tri"reme noun
Etymology
L. triremis; tri- (see Tri-) + remus an oar, akin to E. row. See Row to propel with an oar.
Definitions
  1. (Class. Antiq.) An ancient galley or vessel with tree banks, or tiers, of oars.

Webster 1913