Simple past tense and past participle of fluke.(verb)
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Use "fluked" in a sentence
"A word of warning about the diagrams I posted - they're pretty small samples (50-100 pitches apiece for 2009) and they could easily be fluked, which is why I'd really have liked to have had multiple years of data to play with."
"His head, with several fathoms of his back, protruded above the surface, which at intervals he "fluked" with his tail, -- as if giving a signal to those preceding him, either to direct their onward course, or warn them of some threatened danger."
"They had been "fluked" by the bull-whale, whose fan-shaped tail-fins, striking the boat in an upward direction, had shattered it as easily as an eggshell, tossing the fragments, along with the contents, both animate and inanimate, several feet into the air."