1. blackwood tree any of several hardwood trees yielding very dark-colored wood
  2. bloodwood tree deciduous South African tree having large odd-pinnate leaves and profuse fragrant orange-yellow flowers; yields a red juice and heavy strong durable wood
  3. logwood tree spiny shrub or small tree of Central America and West Indies having bipinnate leaves and racemes of small bright yellow flowers and yielding a hard brown or brownish-red heartwood used in preparing a black dye
  4. blackwater any of several human or animal diseases characterized by dark urine resulting from rapid breakdown of red blood cells
  5. buckwheat tree tree of low-lying coastal areas of southeastern United States having glossy leaves and racemes of fragrant white flowers
  6. black letter a heavy typeface in use from 15th to 18th centuries
  7. black elder a common shrub with black fruit or a small tree of Europe and Asia; fruit used for wines and jellies
  8. blacktail deer mule deer of western Rocky Mountains
  9. black walnut tree North American walnut tree with hard dark wood and edible nut
  10. plumcot tree hybrid produced by crossing Prunus domestica and Prunus armeniaca
  11. Black Death the epidemic form of bubonic plague experienced during the Middle Ages when it killed nearly half the people of western Europe
  12. corkwood tree very small deciduous dioecious tree or shrub of damp habitats in southeastern United States having extremely light wood
  13. blockheaded (used informally) stupid
  14. pagoda tree tall sparingly branched conical tree having large fragrant yellow flowers with white centers
  15. blockaded preventing entry or exit or a course of action
  16. balata tree a tropical hardwood tree yielding balata gum and heavy red timber
  17. blackwood any of several hardwood trees yielding very dark-colored wood
  18. yellowwood tree any of various trees having yellowish wood or yielding a yellow extract
  19. bitterwood tree any of various trees or shrubs of the family Simaroubaceae having wood and bark with a bitter taste
  20. tulipwood tree any of various trees yielding variously colored woods similar to true tulipwood