DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   parm
      /parm/ Further-compressed form of param.  This term is an
      IBMism, and written use is almost unknown outside IBM shops;
      spoken /parm/ is more widely distributed, but the synonym
      arg is favoured among hackers.  Compare var.
      [Jargon File]