1. 颜料；色料；色素
A pigment is a substance that gives something a particular colour.

1. a substance used as a coating to protect or decorate a surface (especially a mixture of pigment suspended in a liquid)
dries to form a hard coating

e.g. artists use `paint' and `pigment' interchangeably

Synonym: paint

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

3. any substance whose presence in plant or animal tissues produces a characteristic color