Possible Clues:

• It's revealed when the chips are down
• Enter the pot
• The odds are it would rot Hal to get engaged
• It's placed
• A favorite is a good one
• Risk money
• Before a wee N that's what you do in the middle for 3 down
• wager
• Jump into a pool?
• This needs only a wee N not to be 3 down one of