DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   NPA
       n 1: a terrorist organization that is the militant wing of the
            Communist Party of the Philippines; a Maoist organization
            formed to overthrow the government; uses hit squads called
            Sparrow Units; opposes United States military presence in
            the Philippines [syn: New People's Army, NPA]