Webster's Revised Unabridged Dictionary · 1913

lead-free

lead-free , adjective

1.
not containing the element lead.
2.
Not containing a lead additive such as tetraethyllead or tetramethyllead; -- of gasoline; as, Most modern cars run on lead-free gasoline. Oposite of leaded.
3.
Not containing a pigment having lead as a component; -- of paints; as, lead-free paint should be used wherever children are exposed to the painted surface.