dry coloring material (especially a powder to be mixed with a liquid to produce paint, etc.)

an orange-yellow pigment in the bile that forms as a product of hemoglobin; excess amounts in the blood produce the yellow appearance observed in jaundice

brown bile pigment formed from urobilinogens and found in feces and in small amounts in urine

pigment occurring in luminescent organisms (as fireflies); emits heatless light when undergoing oxidation

insoluble pigments that account for the color of e.g. skin and scales and feathers