Siena, Sienna: A ferruginous earth used as a pigment in oil and water-color painting (called burnt sienna when it has been exposed to a red heat). The color of this pigment, a rich reddish brown.
sinoper: A color of some shade of red. (lake, cinnabar)
sorrel: Of a bright chestnut color; reddish brown:
terra-cotta: The color of this pottery, a brownish red of various shades.
terra rosa: A light red color of paint similar to Venetian red.
testaceous: brick-colored; Of the color of a tile, a flower-pot, unglazed pottery, etc.; dull red; in Zool. and Bot. applied to shades of brownish red, bro…