DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   SAS
       n 1: a specialist regiment of the British army that is trained
            in commando techniques of warfare and used in clandestine
            operations (especially against terrorist groups) [syn:
            Special Air Service, SAS]