DuckCorp Dico

Found one definition

1.                 From The Free On-line Dictionary of Computing (19 January 2023):
                   
   
   
                   
                     
   leading
      <text> /ledding/ The spacing between lines of text.  This is
      defined when a font is designed but can often be altered in
      order to change the appearance of the text or for special
      effects.  It is measured in points and is normally 120% of
      the height of the text.
      See also kerning, tracking.
      (1996-06-07)