mid 19th cent. (originally a term in games such as billiards denoting a lucky stroke): perhaps a dialect wordOld English flōc(in sense 2), of Germanic origin; related to German flachflatmid 16th cent.: perhaps from fluke (because of the shape)
英英釋義行業釋義網絡釋義
noun
1.a stroke of luck
2.a barb on a harpoon or arrow
3.flat blade-like projection on the arm of an anchor
4.either of the two lobes of the tail of a cetacean
5.parasitic flatworms having external suckers for attaching to a host