Past tense of flig; of uncertain meaning, possibly British dialect referring to a quick motion or action.
From flig plus past tense -ed ending; the root 'flig' is obscure or dialectal, with insufficient documentation to trace a confident etymology, possibly related to fling or flick.
Fligged exists in the twilight zone of English—real enough to appear in historical texts and unabridged dictionaries, yet so obscure that its actual meaning remains speculative, showing how language's past constantly surprises us.
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