"flat end of an arm of an anchor," 1560s, perhaps from fluke (n.3) on resemblance of shape, or from Low German flügel "wing." Transferred meaning "whale's tail" (in plural, flukes) is by 1725, so called from resemblance.
fluke (n.2)
"lucky stroke, chance hit," 1857, also flook, said to be originally a lucky shot at billiards, of uncertain origin. Century Dictionary connects it with fluke (n.1) in reference to the whale's use of flukes to get along rapidly (to go a-fluking or some variant of it, "go very fast," is in Dana, Smythe, and other sailors' books of the era). OED (2nd ed. print) allows only that it is "Possibly of Eng. dialectal origin."
fluke (n.3)
"flatfish," Old English floc "flatfish," related to Old Norse floke "flatfish," flak "disk, floe," from Proto-Germanic *flok-, from PIE root *plak- (1) "to be flat" (see placenta). The parasite worm (1660s) so called from resemblance of shape.
雙語例句
1. By sheer fluke, one of the shipowner's employees was in the city.
非常湊巧的是，船主的一個雇員正在城里。
來自柯林斯例句
2. They are determined to show that their last win was no fluke.
他們決心證明他們上一次的勝利絕非僥幸。
來自《權(quán)威詞典》
3. FLUKE then how to use the LANMETER network tester to detect slow network performance or bad?