DICT.TW Dictionary Taiwan

 Um·ber n.
 1. Paint. A brown or reddish pigment used in both oil and water colors, obtained from certain natural clays variously colored by the oxides of iron and manganese. It is commonly heated or burned before being used, and is then called burnt umber; when not heated, it is called raw umber. See Burnt umber, below.
 2. An umbrere. [Obs.]
 3.  Zool. See Grayling, 1.
 4.  Zool. An African wading bird (Scopus umbretta) allied to the storks and herons.  It is dull dusky brown, and has a large occipital crest.  Called also umbrette, umbre, and umber bird.
 Burnt umber Paint., a pigment made by burning raw umber, which is changed by this process from an olive brown to a bright reddish brown.
 Cologne umber, or German umber, a brown pigment obtained from lignite. See Cologne earth.

 raw umber
      n : greenish brown pigment