Definition of "scalper" []

• One who scalps tickets to popular entertainment events: buying them in advance and then selling them (e.g. online or just outside the venue of the event), often at inflated prices (noun)
• A person on an open outcry exchange trading floor who buys and sells rapidly for his or her own account, aiming to buy from a seller and a little later sell to a buyer, making a small profit from the difference (roughly the amount of the bid/offer spread, or less). (noun)

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• "But the greatest new addition has been the introduction of a short term scalper strategy that works on 4 currency pairs."
• "Plus, it's the hottest ticket in town, but getting a ticket to the Obama inauguration from a scalper could be a federal crime."
• "As more seats go to season-ticket holders, big-business and special-interest groups, Somebody Real Important has become the ticket broker (or, watch your mouth, "scalper"), the one who frees up the precious booty and gets it into circulation pronto."