Related Clues:

• Kernel
• Grave marker
• Inflexible
• Weights
• It's a scorcher
• Little rock
• Robust
• Best Director of 1986 and 1989
• Pip
• Diamond, e.g.
• Vitamin additive
• Problem for a lawn mower
• Word after pig or before horse
• Monopoly token
• See 46-Across