Black walnut Meaning, Definition & Usage

  1. noun North American walnut tree with hard dark wood and edible nut
    black hickory; Juglans nigra; black walnut tree.
  2. noun American walnut having a very hard and thick woody shell

WordNet

Definitions
  1. a North American tree (J. nigra) valuable for its purplish brown wood, which is extensively used in cabinetwork and for gunstocks. The nuts are thick-shelled, and nearly globular.
Definitions
  1. . See under Walnut.

Webster 1913