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Noun: bitter pignut
  1. Hickory of the eastern United States having a leaves with 7 or 9 leaflets and thin-shelled very bitter nuts
    - bitternut, bitternut hickory, bitter hickory, swamp hickory, Carya cordiformis

Derived forms: bitter pignuts

Type of: hickory, hickory tree

Part of: Carya, genus Carya