Definition of "high roller" []

• Slang One who spends freely and extravagantly, as for luxuries or entertainment. (noun)
• Slang One who gambles rashly or for high stakes. (noun)
• Slang An organization, such as a large corporation, that spends or invests liberally or rashly. (noun)

American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.

• "The sight of a high roller and former world champion sitting in on a low-limit hold’em game made up of amateurs, tourists, and semipros was certainly a novelty."
• "In more than a decade working at Sportspages bookshop on Charing Cross Road in London, the days that made the bibliophile in me tingle with jealousy came roughly every two years when an institutional high roller would approach the counter unannounced and utter the most treasured words in the bookseller's lexicon: "I'll have one of everything, please.""