martingale /märˈtin-gāl/

1. A strap passing between a horse's forelegs, fastened to the girth and to the bit, noseband or reins, to keep its head down
2. A short spar under the bowsprit (nautical)
3. (in gambling) the policy of doubling the stake on losing

• tubeful
• tubefuls
• tubeless
• tubeless tire
• tubeless tyre
• tubelike
• tubenose
• tubenoses
• tuber
• Tuberaceae
• tuberaceous
• tubercle
• tubercle bacillus
• tubercled
• tubercles
• tubercula
• tubercular
• tuberculars
• tuberculate
• tuberculated
• tuberculation
• tuberculations
• tubercule
• tubercules
• tuberculin