Definition of flatfish :
Any fish of the family Pleuronectidae; 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.
fish (part of speech: noun)
hake, goby, anchovy, kipper, lamprey, grouper, fluke, marlin, speckled trout, rainbow trout, halibut, mackerel, bowfin, bass, swordfish, trout, tuna, gar, minnow, ray, guppy, salmon, cod, sole, mudfish, walleye, haddock, sea horse, flounder, eel, catfish, shark, puffer, whitefish, blackfish, sting ray, dogfish, bluegill, barracuda, sardine, crappie, smelt, turbot, tarpon, hammerhead, herring, sunfish, fish, char, carp, albacore, pickerel, perch, goldfish, sturgeon, pike, sailfish
- You don't suppose, said Tuppy, with rising vehemence, that I would have exposed this dashed synthetic shark for the flatfish it undoubtedly was if there had not been causes that led up to it. - "Right Ho, Jeeves", P. G. Wodehouse.
- That pretty romance broken and over just because Mr. Glossop would insist that it was a flatfish. - "Right Ho, Jeeves", P. G. Wodehouse.
- But I can't stop out here all night, talking about men who aren't worth wasting a word on and haven't even enough sense to tell sharks from flatfish. - "Right Ho, Jeeves", P. G. Wodehouse.