Related Clues:

• Not ending
• Bookcase unit
• Some boxers
• 'Reservoir --'
• See 30 Across
• *Bookstore unit
• Feet, informally
• Pantry part
• Tracks relentlessly
• Library supporter?
• Immortal
• Ledge in a bookcase
• Mutts
• Never cut off
• Inventory item's place