Related Clues:

• Back a horse
• One may need settling
• Bit of bookie business
• Enter a pool, perhaps
• Place at risk
• Belmont Park action
• Jump into a pool?
• A favorite is a good one
• Push in some chips
• Play the ponies
• Enter the pool
• Lay odds
• Bookie transaction
• Play the point spread, e.g.
• Double or nothing, e.g.