nAlmagraA fine, deep red ocher, somewhat purplish, found in Spain. It is the sil atticum of the ancients. Under the name of Indian red it is used for polishing glass and silver.
Century Dictionary and Cyclopedia
nalmagraA fine deep-red ocher, with an admixture of purple, used in India for staining the person. It is also sometimes used as a paint, and for polishing silver and glass, under the name of Indian red.
Webster's Revised Unabridged Dictionary
Sp. almagra, almagre, fr. Ar. al,-maghrah, red clay or earth