any substance used to produce colour
coloration
Cases of word usage
1) an animal or person born without natural colouring matter in the skin, and hair (which is white) and the eyes (which are pink) (albino)
2) burnt sugar as used for colouring and flavouring (caramel)
3) a plant without leaves, flowers or green colouring (e.g. a mushroom), growing on other plants or on decaying matter (e.g. old wood) (fungus)
4) the colouring matter of the red corpuscles in the blood (haemoglobin)
5) (a kind of bush producing) a reddish-brown dye for colouring the hair etc (henna)
6) a solid colouring matter (to be) mixed with oil or other liquid and used to give colour to a surface (paint)
7) (an example of) a colouring matter used for making dyes, paint etc (pigment)
8) a kind of fine, red powder or cream, used for colouring the cheeks (rouge)