DICT.TW Dictionary Taiwan

 Si·en·na /siˈɛnɑ/
 黃褐色或赭色的繪畫顏料,黃褐色,赭色

 Si·en·na n.  Chem. Clay that is colored red or brown by the oxides of iron or manganese, and used as a pigment. It is used either in the raw state or burnt.
 Burnt sienna, sienna made of a much redder color by the action of fire.
 Raw sienna, sienna in its natural state, of a transparent yellowish brown color.
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 sienna
      n : an earth color containing ferric oxides; used as a pigment