You can find definition of arb below. Words can have several meanings depending on the context. Their meaning may vary depending on where they are used. Please choose approriate definition according to part of speech and context. We have found only one definition of arb. arb is a 3 letter word. It starts with a and ends with b.
someone who engages in arbitrage (who purchases securities in one market for immediate resale in another in the hope of profiting from the price differential)