high roller

English Thesaurus

1. a gambler who wagers large sums (noun.person)

hypernym	:	gambler,
definition	:	a person who wagers money on the outcome of games or sporting events (noun.person)

2. one who spends lavishly and ostentatiously on entertainment (noun.person)

hypernym	:	scattergood, spend-all, spender, spendthrift,
definition	:	someone who spends money prodigally (noun.person)