Definition of black art in English:

black art

noun

often the black arts
another term for black magic
  • ‘It appears to get there by some black magic known only to those with knowledge of the black arts.’
  • ‘Faustus calls on them to teach him the black arts.’
  • ‘A man named Seveni, a master of the black arts, brainwashed the country into a revolt against its own king and queen.’
  • ‘Spending a night in the library of an old friend and scholar of the black arts, the narrator becomes curious about the object in question.’
  • ‘The process is really pretty simple, but there is an element of magic - or black art - involved.’