cnisa -nis- gismu

x1 is a quantity of/contains/is made of lead (Pb); [metaphor: heavy, malleable, soft metal].

See also jinme, tinci.

In notes:

jinme
x1 is a quantity of/contains/is made of made of metal of composition including x2.
tinci
x1 is a quantity of/contains/is made of tin (Sn); [metaphor: cheap or base metal].