a natural earth containing ferric oxide used as a yellowish-brown pigment when untreated (raw sienna) or a reddish-brown pigment when roasted (burnt sienna)
2.
the colour of this pigment
See also burnt sienna
Word origin
C18: from Italian terra di Siena earth of Siena
sienna in American English
(siˈɛnə)
noun
1.
an earth pigment containing iron and manganese oxides, yellowish-brown in the natural state and reddish-brown when burnt
see also burnt sienna
2.
either of these colors
Word origin
It terra di Siena, lit., earth of Siena, where first obtained
Examples of 'sienna' in a sentence
sienna
Where the painter had exposed his skin to the sun over the years---his face and neck, his arms and feet---he was tanned a ruddy sienna.
Clive Barker SACRAMENT (2001)
Maybe I should consider indigo lashes, plucked sienna brows, vermilion cheeks, ruby lips.