parlay

v. t. 1. To wager the winnings plus the initial stake of one bet on a subsequent wager, or to engage in a series of such increased wagers. This is the characteristic act in a common betting system used by gamblers to try to achieve a large win from a small initial stake. Statistically, it is similar to betting a small stake on a game with a large payoff and a proportionately small chance of winning. [ PJC ]

2. To exploit success in one endeavor so as to achieve greater success in subsequent endeavors. [ PJC ]

3. Fig., to transform a gain into something of greater value. [ PJC ]