Sa·ber, Sa·bre n.  A sword with a broad and heavy blade, thick at the back, and usually more or less curved like a scimiter; a cavalry sword.
  Saber fish, or Sabre fish Zool., the cutlass fish.
  cutlass fish, cutlassfish n.
  1. Zool. a peculiar, long, thin, marine fish (Trichiurus lepturus) of the southern United States and West Indies, having a long whiplike scaleless body and sharp daggerlike teeth; -- called also frostfish, saber fish, silver eel, and, improperly, swordfish; also, several related members of the genus Trichiurus.  It is closely related to snake mackerel.
  Syn: -- frost fish, frostfish, hairtail.
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