proxies

noun

1. 1.An agent or substitute authorized to act for another person.
2. 2.The authority to act for another, especially when written.
3. 3.The written appointment of a proctor in suits in the ecclesiastical courts.
4. 4.A measurement of one physical quantity that is used as an indicator of the value of another
5. 5.An interface for a service, especially for one that is remote, resource-intensive, or otherwise difficult to use directly.