Syllable division derived from spelling — this word is not in the pronouncing dictionary, so no phonetic transcription is shown rather than a guessed one.
colour-blind is an adjective meaning "unable to distinguish one or more chromatic colors". It carries 2 recorded senses.
unable to distinguish one or more chromatic colors
unprejudiced about race
Definitions, synonyms and semantic relations for colour-blind come from Princeton University’s WordNet. Commonness is measured against a corpus of everyday English. Full sources and licences.