DuckCorp Dico

Found one definition

1.                 From WordNet (r) 3.0 (2006):
                   
   
   
                   
                     
   leaded
       adj 1: (of panes of glass) fixed in place by means of thin
              strips of lead; "leaded windowpanes"
       2: treated or mixed with lead; "leaded gasoline"; "leaded zinc"
          [ant: leadless, unleaded]
       3: having thin strips of lead between the lines of type