a bluish-white soft malleable ductile plastic but inelastic heavy metallic element found mostly in combination and used especially in pipes, cable sheaths, batteries, solder, and shields against radioactivity — see element table
2
a : a plummet for sounding at sea
b plural British : a usually flat lead roof
c plural : lead framing for panes in windows
d : a thin strip of metal used to separate lines of type in printing
3
a : a thin stick of marking substance (as graphite) in or for a pencil
b : white lead
4
: bullets, projectiles
5
: tetraethyl lead