A progressive parlay is a joint wager on multiple events, for example team sports or horse races, however, unlike a regular parlay, if some of the individual bets lose, but most win, the bettor still wins, although with a much smaller payout, what is called, an accumulator, or combo bet is a single bet that links together two or more individual wagers and is dependent on all of those wagers winning together?
Parlay (gambling) A parlay, accumulator, or combo bet is a single bet that links together two or more individual wagers and is dependent on all of those wagers winning together. The benefit of the parlay is that there are much higher payoffs than placing each individual bet separately since the difficulty of hitting it is much higher. If any of the bets in the parlay lose, the entire parlay loses. If any of the plays in the parlay ties, or "pushes", the parlay reverts to a lower number of teams with the odds reducing accordingly.
Meld (cards) In card games, a meld is a set of matching cards, typically three or more, that earn a player points and/or allow him to deplete his hand. Melds typically come in sequences of ascending cards belonging to the same suit known as "runs" (8s  9s  10s ) or "sets/groups" of cards of identical rank (8s  8c  8h ). Other ones may be "marriage" (e.g. K♥ and Q♥ ) and "bezique" (Q♠ and J♦ ).