sienna
/sɪˈenə/noun
mass noun
1- a kind of ferruginous earth used as a pigment in painting, normally yellowish-brown in colour (raw sienna) or deep reddish-brown when roasted (burnt sienna)（富铁）黄土（用作颜料）。
1.1
- the colour of this pigment赭色。
词源
late 18th cent.: from Italian （terra di） Sienna '(earth of) Siena'.