lead

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, glass, storage batteries, and antiknock compounds. Atomic number 82; atomic weight 207.2; melting point 327.5°C; boiling point 1,749°C; specific gravity 11.35; valence 2, 4. cross-reference: Periodic Table.

Any of various, often graphitic compositions used as the writing substance in pencils.

A thin stick of such material.

Bullets from or for firearms; shot.

A lead weight suspended by a line, used to make soundings.