Related Clues:

• Thick shoe part
• Something to walk on
• Protective shoe part
• Work-boot feature
• Bottom of the foot
• ''Filet of'' fish
• Certain Dover fish
• Work-shoe protection
• Arched body part
• Sandal, mainly
• A lone flat fish?
• Exclusive class of fish
• A lone fish?
• The fish is alone
• Exclusive, only