sienna

A special clay containing iron and manganese oxides, used as a pigment for oil and watercolor painting.

Raw sienna.

Burnt sienna.

A ferruginous ocherous earth, fine and smooth, used as a pigment in both oil and water-color painting.

The color of sienna pigment.

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.

sienna made of a much redder color by the action of fire.

sienna in its natural state, of a transparent yellowish brown color.

a form of clay containing iron and manganese.