D defs.my
Entry 2 senses Webster, 1913

Naumachy

/(na̤"mȧ*ky̆)/ · Nau·ma·chy · IPA
01 n. A naval battle; esp., a mock sea fight put on by the ancient Romans.
  1. 1.
    A naval battle; esp., a mock sea fight put on by the ancient Romans.
  2. 2.
    A show or spectacle representing a sea fight; also, a place for such exhibitions.(Rom. Antiq.)