colour bar
— Noun
– English
~ barrier preventing blacks from participating in various activities with whites
colour
— Noun
– English
~ (physics) the characteristic of quarks that determines their role in the strong interaction; "each flavor of quarks comes in three colors"
colour blindness
— Noun
– English
~ genetic inability to distinguish differences in hue
colour
— Noun
– English
~ 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"