Origin: OE. Sparre; akin to D. Spar, G. Sparren, OHG. Sparro, Dan.& Sw. Sparre, Icel. Sparri; of uncertain origin. 171. Cf. Spar.
(Science: chemical) An old name for a nonmetallic mineral, usually cleavable and somewhat lustrous; as, calc spar, or calcite, fluor spar, etc. It was especially used in the case of the gangue minerals of a metalliferous vein. Blue spar, Cube spar, etc. See Blue, Cube, etc.
Origin: AS. Spaer in spaerstan chalkstone; akin to MHG. Spar, G. Sparkalk plaster.