Symbol Pb A soft, malleable, ductile, bluish-white, dense metallic element, extracted chiefly from galena and used in containers and pipes for corrosives, solder and type metal, bullets, radiation shielding, paints, and antiknock compounds. Atomic number 82; atomic weight 207.2; melting point 327.5°C; boiling point 1,744°C; specific gravity 11.35; valence 2, 4. See Table at element.
A lead weight suspended by a line, used to make soundings.
Bullets from or for firearms; shot: pumped the target full of lead.
leads Strips of lead used to hold the panes of a window.
Abbr. ld.Printing A thin strip of metal used to separate lines of type.
leadsChiefly British A flat roof covered with sheets of lead.
Any of various, often graphitic compositions used as the writing substance in pencils.
A thin stick of such material.
v.
tr.lead·ed, lead·ing, leads
To cover, line, weight, or fill with lead.
Printing To provide space between (lines of type) with leads.
To secure (window glass) with leads.
To treat with lead or a lead compound: leaded gasoline; leaded paint.
[Middle English led, from Old English lēad, probably of Celtic origin.] lead adj.
[led-id] 
ɪd
