Related Clues:

• Clench (teeth)
• Sandpaper feature
• Strength of character seen in 'Educating Rita'
• Courageous resolve
• Grains of sand
• Feistiness or courage
• Small particles of stone involved in spring ritual
• Crushed stone
• True determination?
• Determination, courage
• Moral toughness
• Granular stuff in bottle
• Abrasive sand bits
• Substance on sandpaper
• Courage that's needed to deal with winter conditions?