Gymnotus /(jĭm*nō"tŭs)/
Gym·no·tus
Gymnotus
n.
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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.