Related Clues:

• Curb, with 'in'
• Harness gear
• It's straight from the horse's mouth
• Jockey's strap
• Subway train convenience
• Standee's support
• Horse holder
• Hold your horses?
• Bit puller
• Knapsack part
• Watchband
• Drill insert
• Trigger puller?
• Rider's grip
• Securing attachment