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Noun: high roller
Usage: N. Amer
  1. A gambler who wagers large sums
    "The casino catered to high rollers with exclusive VIP rooms"
     
  2. One who spends lavishly and ostentatiously on entertainment
    "the last of the high rollers";
    - big spender

Derived forms: high rollers

Type of: gambler, scattergood [archaic], spend-all, spender, spendthrift

Encyclopedia: High roller