As a Noun: 1. The darkest colour that there is, the colour of the sky at night when there is no light at all. English = black. As a Verb or Adjective: 1. To have or be the darkest colour that there is, the colour of the sky at night when there is no light at all. English = (be) black. 2. To be tea or coffee that has no milk or cream added to it. English = (be) black.