- umber⇄adj. brown or reddish-brown.
- umber⇄noun 1. a heavy, brown earth that is any one of various mixtures of clay and iron oxide, principally of alumina, iron oxide, and magnesium oxide. In its natural state it is used as a brown pigment called raw umber. After heating it becomes reddish brown
- umber⇄umber (1), noun, adjective, verb.
- umber⇄umber (2), noun.
1. grayling.
2. Also, umber bird. =umbrette. - umber⇄v.t. to stain or paint with umber; make of a brown color.