[Onomatopœic; cf. flick, spank.] trans. To whip with a light, sudden stroke, to flick; also, to crack (a whip).

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1830.  Lytton, P. Clifford, iii. He then, taking up the driving-whip, flanked a fly from the opposite wall.

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1833.  Anglo-sapphic Ode, in Whibley, Cap and Gown, 136.

        Mack! I maintain immaculate we are, for
No Robert Whig Mack Beverly, Esquire, now
Kicks up a row, gets drunk, or flanks a tandem—
                    Whip out of window.

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1861.  [Mrs. A. J. Penny], Romance Dull Life, vii. 52. He still eased his feelings by ‘flanking’ everything in the room with a very dusty pocket-handkerchief at all odd minutes.

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