Wi-Fi bridge - technical definition

A device based on the 802.11 protocol that is used to add desktop computers and printers in remote locations to the network without having to string cables and without having to equip each one with a Wi-Fi adapter. The Wi-Fi bridge has a built-in LAN switch for plugging in several devices, and like all Wi-Fi hotspots, does not require line-of-site. It can be set up almost anywhere and transmit over the air to another Wi-Fi bridge or access point that is wired to the main network.

Variations
Some Wi-Fi bridges are designed to connect to only one device. In addition, long-distance bridges may require line-of-site. See wireless bridge, wireless game adapter and 802.11. See also powerline Ethernet bridge.