Gymnotus /(jĭm*nō"tŭs)/

Gym·no·tus

Gymnotus

n.
  1. A genus of South American fresh-water fishes, including the Gymnotus electricus, or electric eel. It has a greenish, eel-like body, and is possessed of electric power. (Zool.)
    One fearful shock, fearful but momentary, like that from the electric blow of the gymnotus.