Noun:

1. yellow color or pigment; the chromatic color resembling the hue of sunflowers or ripe lemons

yellowadj.黄色的n.黄色；蛋黄；黄种人v.（使）变黄

1. The disease manifests itself in yellowness of the skin and eyes.
   这种病的明显症状是皮肤和眼睛发黄。