|  | 
Definition of Jamesonite
1. n. A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.
Medical Definition of Jamesonite
1. 
|  | 
1. n. A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron.
1.