Definitions of network:

• noun:   (broadcasting) a communication system consisting of a group of broadcasting stations that all transmit the same programs

  Example: "The networks compete to broadcast important sports events"

• noun:   (electronics) a system of interconnected electronic components or circuits
• noun:   a system of intersecting lines or channels

  Example: "A railroad network"

• noun:   an interconnected system of things or people

  Example: "He owned a network of shops"

• noun:   an open fabric of string or rope or wire woven together at regular intervals
• verb:   communicate with and within a group

  Example: "You have to network if you want to get a good job"