1. a room in a printing or publishing establishment where proofs are read and corrected before final printing
Usage: printing industry term; also called proof room

Examples

• The proofroom staff carefully reviewed each page before it went to press.
• Errors were caught in the proofroom and corrected before the book was printed.
• She worked in the proofroom, checking for typos and formatting issues.
• The proofroom was equipped with magnifying glasses and reference materials for quality control.