PIGMENT

[noun] - a substance which gives something a particular colour when it is present in it, added to it or mixed with itMelanin is the dark brown pigment of the hair, skin and eyes which is present in varying amounts in people of all races. [C]There is concern that some of the modelling clay may contain lead-based colour pigments which produce long-term health hazards. [C]Pigment is mixed into oil, glue, egg, vegetable gum or wax to make paint. [U]