to fling the limbs and body, as in making efforts to move; to struggle, as a horse in the mire, or as a fish on land; to roll, toss, and tumble; to flounce. They have floundered on from blunder to blunder. (Sir W. Hamilton)
The common english flounder is Pleuronectes flesus. There are several common American species used as food; as the smooth flounder (P. Glabra); the rough or winter flounder (P. Americanus); the summer flounder, or plaice (Paralichthys dentatus), atlantic coast; and the starry flounder (Pleuronectes stellatus).