ADJECTIVE (3)

1. (of panes of glass) fixed in place by means of thin strips of lead;
- Example: "leaded windowpanes"

2. treated or mixed with lead;
- Example: "leaded gasoline"
- Example: "leaded zinc"

3. having thin strips of lead between the lines of type;

The Collaborative International Dictionary of English v.0.48:

Lead \Lead\ (l[e^]d), v. t. [imp. & p. p. Leaded; p. pr. & vb.
   n. Leading.]
   1. To cover, fill, or affect with lead; as, continuous firing
      leads the grooves of a rifle.
      [1913 Webster]

   2. (Print.) To place leads between the lines of; as, to lead
      a page; leaded matter.
      [1913 Webster]

The Collaborative International Dictionary of English v.0.48:

Leaded \Lead"ed\, a.
   1. Fitted with lead; set in lead; as, leaded windows.
      [1913 Webster]

   2. (Print.) Separated by leads, as the lines of a page.
      [1913 Webster]

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