n. The best possible hand in a game of Omaha Hi/Lo, consisting of A-2-3-4-5.
Background: Omaha Hi/Lo is essentially a split-pot variation of Texas holdem (the rules of play differ slightly, but are of no consquence to this definition). Both the player with the highest hand and the player with the lowest hand share the pot. A low hand must have no pairs, but straights do not count against the low. Therefore, the Wheel will often win both the high and low pots.
Jones thought he had me beat on that hand until I threw down the Wheel and took all his money.