DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   LDB
      /l*'d*b/ [PDP-10 instruction] To extract from the middle.
      "LDB me a slice of cake, please."  This usage has been kept
      alive by Common LISP's function of the same name.  Considered
      silly.  See also DPB.
      [Jargon File]