WordReference Random House Unabridged Dictionary of American English © 2020
mud•min•now  (mudmin′ō),USA pronunciation n., pl. (esp. collectively) -now,  (esp. referring to two or more kinds or species) -nows. 
  1. Fishany of several small, carnivorous fishes of the genera Umbra and Novumbra, found in muddy streams and pools.
  • mud + minnow 1865–70, American.

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