Smithsonian :: Smithsonian (a.) Of or pertaining to the Englishman J. L. M. Smithson, or to the national institution of learning which he endowed at Washington, D. C.; as, the Smithsonian Institution; Smithsonian Reports..
Smithsonian :: Smithsonian (n.) The Smithsonian Institution.
Smithsonite :: Smithsonite (n.) Native zinc carbonate. It generally occurs in stalactitic, reniform, or botryoidal shapes, of a white to gray, green, or brown color. See Note under Calamine..