VPN

is a Virtual Private Network

Edit: You should've found this or ask a better question.
No stupid questions.... just unclear...
http://en.wikipedia.org/wiki/Vpn

http://i3.kym-cdn.com/photos/images/original/000/000/151/n725075089_288918_2774.jpg

http://lmgtfy.com/?q=What+is+a+VPN

A VPN is a virtual private network. What that means is that in order to get into a business's private part of their internet, they have to travel through a "tunnel" because of the security they have set. It's basically an extra layer of security.

A VPN supplies network connectivity over a long physical distance. VPNs enable file sharing, video conferencing and similar network services. A key feature of a VPN is it's ability to work over both private networks as well as public networks like the Internet.

a VPN supports at least three different modes of use:

???Internet remote access client connections
???LAN-to-LAN internetworking
???Controlled access within an intranet

I hope i was of some help to you.

VPN is a service that encrypts your internet connection and makes it anonymous.