Flatfish /(?)/

Flat·fish

Flatfish

n.
  1. Any fish of the family Pleuronectidæ; esp., the winter flounder (Pleuronectes Americanus). The flatfishes have the body flattened, swim on the side, and have eyes on one side, as the flounder, turbot, and halibut. See Flounder. (Zool.)