subs. (gaming).—Doubling a stake at every loss. [From the fact that, as in all fair games, a player must win once, there is a safe hold of fortune. The difficulty is to command a big enough bank, or, having the bank, to find some one to follow in a fair game.]

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  1823.  BADCOCK (‘Jon Bee’), Dictionary of the Turf, etc., s.v. MARTINGALE—at play, to double stakes constantly, until luck taking one turn only, repays the adventurer all.

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  1855.  THACKERAY, The Newcomes, XXVIII. You have not played as yet? Do not do so; above all, avoid a MARTINGALE if you do.

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  1874.  M. and F. COLLINS, Frances, ix. ‘This is my cousin, Dick Wyldote. You ought to know him. He’s got an infallible MARTINGALE—breaks the bank everywhere.’

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  1887.  Science, x. 44. The fallacy of those who devise sure methods of defeating the bank (MARTINGALES as they are termed), etc.

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