• WordNet 3.6
    • n sinopis a red ocher formerly used as a pigment
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Webster's Revised Unabridged Dictionary
    • n Sinopis A red pigment made from sinopite.
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Century Dictionary and Cyclopedia
    • n sinopis A pigment of a fine red color, prepared from the earth sinople.
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In literature:

We find among them different shades of the same color, several reds, for instance, as sinopis, cinnabar, and others.
"Museum of Antiquity" by L. W. Yaggy