say it: KUHL-ur
colour is a noun, verb and adjective meaning "any material used for its color". It carries 14 recorded senses.
any material used for its color
“she used a different color for the trim”
the timbre of a musical sound
“the recording fails to capture the true color of the original music”
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”
an outward or token appearance or form that is deliberately misleading
“he hoped his claims would have a semblance of authenticity”
“he tried to give his falsehood the gloss of moral sanction”
“the situation soon took on a different color”
the appearance of objects (or light sources) described in terms of a person's perception of their hue and lightness (or brightness) and saturation
having or capable of producing colors
“color film”
“he rented a color television”
“marvelous color illustrations”
photography
Forms marked · are formed by the regular rule rather than recorded in the source data. English keeps a few hundred irregulars and the rest follow the pattern, so the rule is right far more often than not — but it is a rule, and the mark says so.
Definitions, synonyms and semantic relations for colour come from Princeton University’s WordNet. The pronunciation comes from the CMU Pronouncing Dictionary. Commonness is measured against a corpus of everyday English. Full sources and licences.