Related Clues:

• Geometry topic
• Kind of rug or code
• Grounds
• Realty measure
• Height times width
• Plot size, perhaps
• Word with code or rug
• Side squared, for squares
• Carpentry calculation
• Caldwell title measure
• Type of rug
• Code that's not a secret
• It could be a lot
• Impolite-sounding cross?
• Floor space