black art

Noun

 * 1)  A practice such as witchcraft, sorcery, necromancy, or black magic.
 * 2)  A process that is mysterious or difficult to master.
 * 1)  A process that is mysterious or difficult to master.
 * 1)  A process that is mysterious or difficult to master.

Translations

 * Chinese:
 * Mandarin: ,
 * Greek: μαύρη μαγεία
 * Latin: veneficium, maleficium
 * Norwegian:
 * Bokmål: svartekunst
 * Nynorsk: svartekunst
 * Polish:
 * Russian:
 * Swedish: