DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   call off
       v 1: postpone indefinitely or annul something that was
            scheduled; "Call off the engagement"; "cancel the dinner
            party"; "we had to scrub our vacation plans"; "scratch that
            meeting--the chair is ill" [syn: cancel, call off,
            scratch, scrub]
       2: give the calls (to the dancers) for a square dance [syn:
          call, call off]