Related Clues:

• It can be kicked
• To crush or pulverize
• It may be hard to break
• Sister's outfit
• Monk's robe
• Crush into bits
• Established practice
• Join the rat race
• It's tough to break one
• Riding costume
• Joyless routine
• Convent wear
• Nail-biting, perhaps
• Monotonous song
• Regular tendency