Related Clues:

• Abrasive
• It may be applied across the board
• Abrasive board
• Ball-scuffing material
• Scratchy board
• File material
• Filing stuff
• It may be at your fingertips
• It could be on the board
• Mineral
• Board type
• Grinding stuff
• Abrasive material
• Abrasive powder
• Grit for grinding