Part of the mythical set of pirate laws. Parlay entitles its invoker with free passage to negotiate with a ship’s captain until the negotiations are complete.
ELIZABETH: Parlay! I invoke the right of parlay! According to the Code of the Brethern, set down by the pirates Morgan and Bartholomew, you must take me to your Captain!
n. (gambling) - 1. A wager and its winnings from a previously successful bet used for additional betting. 2. A type of bet, usually wagered on pro team sports, where all teams picked must all win in order to collect a fixed wager.
v.- to bet in such a manner (or just gambling in general)