local-area network. High-speed, low-error data network
covering a relatively small geographic area (up to a few
thousand meters). LANs connect workstations, peripherals,
terminals, and other devices in a single building or other
geographically limited area. LAN standards specify cabling and
signaling at the physical and data link layers of the OSI model.
Ethernet, FDDI, and Token Ring are widely used LAN
technologies. Compare with MAN and WAN.

Source: CISCO