A person authorized to act for another; an agent or substitute.(noun)
The authority to act for another.(noun)
The written authorization to act in place of another.(noun)
American Heritage(R) Dictionary of the English Language, Fifth Edition. Copyright (c) 2011 by Houghton Mifflin Harcourt Publishing Company. Published by Houghton Mifflin Harcourt Publishing Company. All rights reserved.
Use "proxy" in a sentence
"After you install GPass, launching an application using the proxy is as simple as double-clicking the app from inside the GPass interface."
"BLITZER: Although yesterday we heard -- we heard Nouri al - Maliki, the prime minister of Iraq, yesterday in an interview with our own Michael Ware, basically equate Iran and the United States, saying he wants both of them to fight what he called their proxy out of Iraq."
"General Petraeus warned Congress that the U.S. is already fighting what he called a proxy war with Iran."