'Jamesonite' definitions:

Definition of 'Jamesonite'

From: GCIDE

Jamesonite \Ja"me*son*ite\, n. [From Prof. Jameson, of Edinburgh.] (Min.) A steel-gray mineral, of metallic luster, commonly fibrous massive. It is a sulphide of antimony and lead, with a little iron. [1913 Webster]