Definition of black noun from the Oxford Advanced Learner's Dictionary

      

    black

     noun
    noun
    BrE BrE//blæk//
     
    ; NAmE NAmE//blæk//
     
     
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    colour
  1. 1  [uncountable] the very darkest colour, like night or coal the black of the night sky Everyone at the funeral was dressed in black.
  2. people
  3. 2  (also Black) [countable, usually plural] a member of a race of people who have dark skin In this meaning black is more common in the plural. It can sound offensive in the singular. Instead, you can use the adjective (‘a black man/woman’) or, in the US, African American.
  4. Word Origin Old English blæc, of Germanic origin.Idioms to have money, for example in your bank account The company has managed to stay in the black for the year ending December 31. compare be in the red See related entries: Running a business  having no colours except black, white and shades of grey (in photographs, on television, etc.) a film made in black and white black-and-white photos See related entries: Types of film in a way that makes people or things seem completely bad or good, or completely right or wrong It's a complex issue, but he only sees it in black and white. This is not a black-and-white decision (= where the difference between two choices is completely clear). in writing or in print I never thought they'd put it in black and white on the front page.
See the Oxford Advanced American Dictionary entry: black