Related Clues:

• '___ yourself!'
• Prepare for impact
• Reinforce
• Knee protector
• It may go down on one knee
• Knee protection
• Pair (of birds)
• Prepare (oneself) for a jolt
• Medical joint support
• "__ yourself!": "Get ready for a shock!"
• Pain-in-the-neck wear?
• Protective arm band
• Knee support
• Supporting piece
• Joint support