The European flounder. See Flounder.
- Any of various flatfishes, especially a flounder of the genus Paralichthys.
- See trematode.
- Nautical The triangular blade at the end of an arm of an anchor, designed to catch in the ground.
- A barb or barbed head, as on an arrow or a harpoon.
- Either of the two horizontally flattened divisions of the tail of a whale.
- A stroke of good luck.
- A chance occurrence; an accident.
- Games An accidentally good or successful stroke in billiards or pool.