Source : Webster's Revised Unabridged Dictionary (1913)

Nas \Nas\ (n[aum]z). [For ne was.]
   Was not. [Obs.] --Chaucer.

Nas \Nas\ [Contr. fr. ne has.]
   Has not. [Obs.] --Spenser.

Source : Free On-Line Dictionary of Computing

NAS
     
         1. {Network Application Support}.
     
        2.  {Network Attached Storage}.
     
        3.  {National Advanced Systems}.
     
        (2003-07-20)