Bou‐lan″ger‐ite (�), n. [From Boulanger, a French mineralogist.] (Min.) A mineral of a bluish gray color and metallic luster, usually in plumose masses, also compact. It is a sulphide of antimony and lead.
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Webster's Dictionary 1913
Webster's Revised Unabridged Dictionary, C. & G. Merriam Co., 1913.