1. n. Any system consisting of multiple parts that are connected together to allow transportation, distribution of power, or voice and data communication between or along the parts or between the parts and a control center. Such networks include the phone system, LANs, MANS, the Internet, and public power grids to name some.

2. n. An intimately connected group of people or organizations with common goals (e.g. “Old boy network”).

3. v. To set up a network of any kind.