Answer: parlayed

AnswerCrossword Clue
PARLAYEDUsed one's winnings profitably
PARLAYEDMade a certain kind of bet.
PARLAYEDReinvested stakes
PARLAYEDContinued the bet
PARLAYEDIncreased the value of
PARLAYEDDoubled up, at the track
parlayedTransform into (something greater or more valuable)
parlayedTurn an initial stake or winnings from a previous bet into (a greater amount) by gambling
parlayedPARLAY, to wager original winnings on a new bet