Spār1, n.
n. [Prov. & O. Eng. spaad, spat, M. H. Ger. & Sw. spat, N. H. Ger. & Dan. spath, D. spath, N. Lat. spathum, spatum, Fr. spath, It. spato, Sp. espato. Cf. M. H. Ger. spat, a chip, a splinter, and A-S. spār-stān, chalk-stone.] (Min.) Any earthy mineral that breaks with regular surfaces, and has some degree of luster; a crystallized earthy mineral of a shining luster. Dana.