Related Clues:

• One thing on top of another
• Fail to utilize
• Unnecessary cost
• Mass
• Ton
• Watermelon rind, e.g.
• Fail to use
• Clunker of a car
• Big ol' pile
• Car that's seen better days
• Stuff to discard
• Use unwisely
• 'What a ___!'
• It's thrown into baskets
• Use inefficiently, as time