Galena

n.	1.
	1.	(Med.) A remedy or antidote for poison; theriaca.
	2.	(Min.) Lead sulphide; the principal ore of lead. It is of a bluish gray color and metallic luster, and is cubic in crystallization and cleavage. False galena See Blende.

Noun

1.

galena - soft blue-gray mineral; lead sulfide; a major source of lead

atomic number 82, lead, mineral, Pb