Related Clues:

• Smith's heavy iron block
• Appendage to ear
• Smithy's block
• Nut seed
• Nut's centre
• Part of ear
• Seed in hard shell
• Iron block
• Seed of nut
• Block in smithy
• Block in forge
• Ear flap
• Block on which metal can be hammered
• 40-Across part
• Smith's tool