hairtail Meaning, Definition & Usage

  1. noun long-bodied marine fishes having a long whiplike scaleless body and sharp teeth; closely related to snake mackerel
    cutlassfish; frost fish.

WordNet

Hair"tail` noun
Definitions
  1. (Zoöl.) Any species of marine fishes of the genus Trichiurus; esp., T. lepterus of Europe and America. They are long and like a band, with a slender, pointed tail. Called also bladefish.

Webster 1913