1. black knot disease of plum and cherry trees characterized by black excrescences on the branches
  2. black Angus black hornless breed from Scotland
  3. blackness total absence of light
  4. black kite dark Old World kite feeding chiefly on carrion
  5. black grouse grouse of which the male is bluish-black
  6. blacken out darken completely
  7. blackened darkened by smoke
  8. Balkanize divide a territory into small, hostile states
  9. blood knot a knot used for tying fishing leaders together
  10. black cat large dark brown North American arboreal carnivorous mammal
  11. Black Panthers a militant Black political party founded in 1965 to end political dominance by Whites
  12. black economy a hidden sector of the economy where private cash transactions go unreported
  13. black walnut North American walnut tree with hard dark wood and edible nut
  14. blackguard someone who is morally reprehensible
  15. black-coated coated with black
  16. black knapweed a weedy perennial with tough wiry stems and purple flowers
  17. black and white not having or not capable of producing colors
  18. Plagianthus small genus of shrubs and trees of Australia and New Zealand
  19. black spot any of several fungous diseases of plants that produce small black spots on the plant
  20. Black Hand a secret terrorist society in the United States early in the 20th century