WordRel.com

• an illegal market in which goods or currencies are bought and sold in violation of rationing or controls

  hypernym

  marketmarket placemarketplace

• people who engage in illicit trade

  hypernym	market
  mero member	black marketeer

• deal in illegally, such as arms or liquor

  synonym	run
  domain topic	crimecriminal offencecriminal offenselaw-breaking
  hypernym	merchandisetrade
  similar	plyrun