DuckCorp Dico

Found one definition

1.                 From English - German Ding/FreeDict dictionary ver. 1.9-fd1:
                   
   
   
                   
                     
   anti-aircraft /ˈanti ˈeəkɹaft/
   Flugabwehr…, Fliegerabwehr… [Ös.]  [Schw.] , Fla…, Luftabwehr… [mil.]
         "anti-aircraft fire"  - Flugabwehrfeuer, Fla-Feuer
         "anti-aircraft artillery"  - Flugabwehrartillerie, Fla-Artillerie
      Synonym: ack-ack