arbitrage n[French, literally, arbitration, decision-making]
1 : the purchase of a security, commodity, or foreign currency in one market for the purpose of immediately selling it at a higher price in another market
2 : the purchase of the stock of a takeover target esp. for the purpose of selling it to the raider for a profit
Source: Merriam-Webster's Dictionary of Law ©1996. Merriam-Webster, Incorporated. Published under license with Merriam-Webster, Incorporated.