adj

• (of an object) Absorbing all light and reflecting none; dark and hueless.
  "The items around him were black in colour."
• (of a location or setting) Without light.
• (sometimes capitalized) Belonging to or descended from any of various (African, Aboriginal, etc.) ethnic groups which typically have dark pigmentation of the skin. (See usage notes below.)
  "Somebody tell me, what can I do / Something is holding me back / Is it because I'm black?"
• (sometimes capitalized) Belonging to or descended from any of various (African, Aboriginal, etc.) ethnic groups which typically have dark pigmentation of the skin. (See usage notes below.)

noun

• (countable and uncountable) The colour/color perceived in the absence of light, but also when no light is reflected, but rather absorbed.
  "Black is the badge of hell, / The hue of dungeons, and the suit of night."
• (countable and uncountable) A black dye or pigment.
• (countable) A pen, pencil, crayon, etc., made of black pigment.
• (in the plural) Black cloth hung up at funerals.
  "Groans, and convulsions, and a discolored face, and friends weeping, and blacks, and obsequies, and the like, show death terrible."

verb

• (transitive) To make black; to blacken.
  ""I don't want to fight; but you are a mean, dirty blackguard, or you wouldn't have treated a girl like that," replied Tommy, standing as stiff as a stake before the bully. "Say that again, and I'll black your eye for you.""
• (transitive) To apply blacking to (something).
  "[…] he must catch, curry, and saddle his own horse; he must black his own brogans (for he will not be able to buy boots)."
• (British, transitive) To boycott, usually as part of an industrial dispute.
  "The plants were blacked by the Transport and General Workers' Union and a consumer boycott was organised; both activities contributed to what the union saw as a victory."

noun

• (chess) The player moving the black pieces.
  "Unless the arbiter decides otherwise, ranks from White to Black shall be given the German numbers."