coloring in WordNet English dictionary

1. a visual attribute of things that results from the light they emit or transmit or reflect
   "a white color is made up of many different wavelengths of light"
   color  colour  coloring  colouring 
   
2. the act or process of changing the color of something
   coloring  colouring 
   
3. a digestible substance used to give color to food
   "food color made from vegetable dyes"
   coloring  colouring  food coloring  food colouring  food color  food colour