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1.                 From The Collaborative International Dictionary of English v.0.48:
                   
   
   
                   
                     
   LAN \LAN\ n. [Local Area Network.]
      A local area network; a network[3] connecting computers and
      word processors and other electronic office equipment within
      a small area, to create an inter-office system, typically
      within one building or one site of a corporation. Contrasted
      to WAN, a wide-area network.
      Syn: local area network.
           [WordNet 1.5]