[1] : The Collaborative International Dictionary of English v.0.48

almagra \alma"gra\, n. sp. almagra, almagre, fr. ar.
   al-maghrah red clay or earth.
   a 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.
   1913 webster almayne
   almain
see also:
sil atticum indian red 

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Almagra, definition of term: Almagra
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