(idiomatic) A presumed unacknowledged system of association between childhood friends (especially those at school or university together), used for mutual assistance or favouritism.

a network that covers a large geographical area such as a city.

Alternative spelling of metropolitan area network

plural of network interface card

A computer hardware component designed to allow computers to communicate over a computer network.

Alternative form of old boy network

(computing) A computer network that covers a large geographic area.

(computing) An interconnection of computers that are in relatively close proximity to each other, such as within a building.

A wireless communications network, intended for devices within a small room or cubicle.

(mathematics) A kind of graph in which most nodes are not neighbors but most can be reached from every other by a small number of steps, i.e. the typical distance between two randomly chosen nodes grows proportionally to the logarithm of the number of nodes in the network.