martingale

American  

[mahr-tn-geyl] / ˈmɑr tnˌgeɪl /

noun

1. Also called standing martingale.  part of the tack or harness of a horse, consisting of a strap that fastens to the girth, passes between the forelegs and through a loop in the neckstrap or hame, and fastens to the noseband: used to steady or hold down the horse's head.

2. Also called running martingale.  a similar device that divides at the chest into two branches, each ending in a ring through which the reins pass.

3. Nautical. a stay for a jib boom or spike bowsprit.

4. a system of gambling in which the stakes are doubled or otherwise raised after each loss.

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martingale British  

/ ˈmɑːtɪnˌɡeɪl /

noun

1. a strap from the reins to the girth of a horse preventing it from carrying its head too high

2. any gambling system in which the stakes are raised, usually doubled, after each loss

3. Also called: martingale boom.  nautical

   1. a chain or cable running from a jib boom to the dolphin striker, serving to counteract strain

   2. another term for dolphin striker

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Etymology

Origin of martingale

1580–90; < Middle French: kind of hose fastened at the back, allegedly < Provençal martegalo, feminine of martegal, inhabitant of Martigue, town in SE France, though sense apparently influenced by Spanish almártaga harness < Arabic al-martaʿah the vein