flukeとは何ですか?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.