fluke
$ \mathrm{fluke}^1 |flo͞ok|
noun
an unlikely chance occurrence, especially a surprising piece of luck:
｟くだけて｠ 〖通例単数形で〗まぐれ当たり, 幸運(な出来事), フロック
e.g. their triumph was no fluke.
ORIGIN
mid 19th century (originally a term in games such as billiards denoting a lucky stroke): perhaps a dialect word.
$ \mathrm{fluke}^2 |flo͞ok|
noun
1. a parasitic flatworm which typically has suckers and hooks for attachment to the host. Some species are of veterinary or medical importance.
Classes Trematoda and Monogenea, phylum Platyhelminthes. See digenean and monogenean.
〘虫〙 吸虫(類)
2. dialect or North American a flatfish, especially a flounder.
〘魚〙 平たい魚の総称
ORIGIN
Old English flōc (in fluke2 (sense 2)), of Germanic origin; related to German flach ‘flat’.
$ \mathrm{fluke}^3 |flo͞ok|
noun
a broad triangular plate on the arm of an anchor.
錨づめ［かぎ］.
either of the lobes of a whale's tail.
クジラの尾の先端
ORIGIN
mid 16th century: perhaps from fluke2 (because of the shape).