Related Clues:

• Longtime mall chain
• Narrow space
• Space between peaks
• Trendy clothing giant
• Hollow space
• See 15
• Hole where rodent has it buried
• In a guinea pig it results in tooth loss
• Hollow (in tooth)
• Destination for a filling!
• Space (maybe for a year?)
• Hole (in a tooth?)
• Generation separator
• Reason for braces, perhaps
• Space between teeth, e.g