- noun a person who buys and sells something to make a large rapid profit (e.g. by buying and reselling tickets for a popular sporting event)
- noun a trader who buys and sells the same futures on the same day
- A sieve for removing oversized particles.
- noun a ticket tout or other form of ruthless (though small-scale) profiteer. The term comes from the verb to scalp, which was 19th-century stock-exchange jargon for buying cheap and selling at an exaggerated price (from the notion of ‘taking a cut off the top’).