From Longman Dictionary of Contemporary Englishumberum‧ber /ˈʌmbə $ -ər/ noun [uncountable] CCa brown colour like earth
Examples from the Corpus
umber• A burnt umber man in a raw sienna compartment.• This is a mixture of yellow ochre and burnt umber applied to previously dampened paper.• Floodlighting reflected from the silvery burnt umber cladding of the walls as though ice-ghosts danced there, and set the green columns aglow.• As the chlorophyll disappears during the autumn, the leaves turn fiery red, garnet or umber.Origin umber (1500-1600) Probably from umber “shade, color” ((13-18 centuries)), from Old French umbre, from Latin umbra; → UMBRAGE 