(literally) The color of human skin. / (figuratively) One's ethnicity.

Of a pale yellow colour, like that of flax.

(US) Alternative spelling of colour wheel

(American spelling) Alternative form of colour triangle

(pathology) Any of several medical conditions in which the physical ability to see colors is impaired, especially achromatopsia, Daltonism. / (figuratively) Indifference to a person's skin color or race.

(American spelling, idiomatic) Extremely well; in an exceptional, noteworthy, or extraordinary manner.

(American spelling, physics) In the Standard Model of particle physics, a property possessed by quarks, antiquarks, and gluons that determine rules for how these particles may interact. There are three pairs of colors and anticolors: red, green, blue, and their corresponding anti-colors (e.g. anti-red).

(US) Alternative spelling of food colouring

Of the wrong color. / (idiomatic) Dirty, vulgar or obscene, especially in a way that is unpleasant. / (idiomatic) Different than usual. / (idiomatic) Feeling mildly unwell.

(usually used attributively) A simple drawing exercise, intended especially for children, consisting of a line drawing that divides the artwork into distinct spaces, the intended color of each indicated by a number and referenced from a key.