Related Clues:

• Communication medium
• Hard currency
• Plastic alternative?
• Billfold contents
• It's no charge?
• Credit alternative
• Cover (over)
• Check alternative
• The C of J.C. Penney
• It may be cold or hard
• With workers, the "P" in CEPU
• Writing material
• Rock beater
• Research project
• J.C. Penney's C