1. discolored with yellowish-brown stains, especially referring to old paper or books
Usage: often used to describe aged books or documents
2. confused or puzzled
Usage: informal; chiefly British

Examples

• The antique book’s pages were badly foxed with age.
• I found several foxed manuscripts in the old library.
• The foxed photographs had brown spots throughout.
• He looked completely foxed by the math problem.
• She was foxed by the unexpected question.
• The foxed documents were still readable despite the stains.