Related Clues:

• Leather strap
• Put a check on
• It may stop some horseplay
• Rider's strap
• Jock's strap
• Smarty Jones' control
• Curb, with 'in'
• Harness gear
• It's straight from the horse's mouth
• Jockey's strap
• Horse holder
• Hold your horses?
• Repress
• Bit puller
• Trigger puller?