umber/ˈʌmbə(r); `ʌmbɚ/ n[U]natural colouring-matter similar to ochre but darker and browner 棕土, 赭土（一种深棕色天然颜料） burnt umber, ie reddish-brown pigment 烧棕土（一种红棕色颜料）. umber, adj yellowish or reddish-brown 黄棕色的; 红棕色的.
牛津英汉双解词典