Flounder(n.)
- A flatfish of the family Pleuronectidae, of many species.
Flounder(n.)
- A tool used in crimping boot fronts.
Flounder(v. i.)
- 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.