Keywords: black, blacken
Sign Definition
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 be or have 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 make something black. English = blacken.