Scalper (?), n.
1.
One who, or that which, scalps.
2. Surg.
Same as Scalping iron, under Scalping.
3.
A broker who, dealing on his own account, tries to get a small and quick profit from slight fluctuations of the market.
[Cant]
4.
A person who buys and sells the unused parts of railroad tickets.
[Cant]
© Webster 1913.