An intermediary device on a communications network that expedites message delivery. On a single network linking many computers through a mesh of possible connections, a router receives transmitted messages and forwards them to their correct destinations over the most efficient available route. On an interconnected set of LANs (local area networks)—including those based on differing architectures and protocols—using the same communications protocols, a router serves the somewhat different function of acting as a link between LANs, enabling messages to be sent from one to another. See also bridge, gateway.
A special-purpose computer (or software package) that handles the connection between 2 or more Packet-Switched networks. Routers spend all their time looking at the source and destination addresses of the packets passing through them and deciding which route to send them on.
(Computer) A device for routing or directing information in a network.
Device that enables dissimilar networks (such as Ethernet and Token Ring) to interconnect, provided there is a common protocol. Routers can be programmed to determine the fastest or most cost-effective route for data to travel. See also bridge and brouter.

One that routs: as a routing plane; a machine with a revolving vertical spindle and cutter for milling out the surface of wood or metal
(Tool) A tool for working edges in woodworking and cabinetry.