Related Clues:

• Stubborn courage
• Beach sandal problem
• "True ___" (John Wayne movie)
• Coarse particles
• Abrasive material
• Wheat, rye, and rice
• Sand units
• Tenacity
• Abrasive stuff
• Rice and wheat, e.g.
• Moral fiber
• Perseverance
• Abrasive particles
• ''True ___'' (John Wayne movie)
• Sandpaper grade