1. A dark yellowish-brown earthy mineral containing oxides of iron and manganese, used to make pigments. 2. Any of these pigments or the brownish colours produced by them.
adj
1. Referring to the colour of umber; dark brown.
Etymology: 16c: from French terre d'ombre or Italian terra di ombra shadow earth, from Latin umbra shade or shadow, or from Umbra feminine of UmberUmbrian.