1. people authorized to act for others, especially in voting
2. written authorizations allowing someone to act for another person
3. substitute measures or indicators used to represent something else

Examples

• The shareholders appointed proxies to vote on their behalf at the annual meeting.
• She collected proxies from absent board members before the vote.
• Researchers used test scores as proxies for student achievement.
• The company’s network uses proxies to filter internet traffic.
• Several proxies were needed to reach a quorum for the decision.
• Economic indicators often serve as proxies for overall market health.
• The IT department configured proxies to improve security and performance.