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The Collaborative International Dictionary
Xanthoxylum Carolinianum

Prickly ash \Prickly ash\ (Bot.),

  1. A prickly shrub ( Xanthoxylum Americanum) with yellowish flowers appearing with the leaves; also called toothache tree. All parts of the plant are pungent and aromatic. The southern species is Xanthoxylum Carolinianum.
    --Gray.

  2. (Bot.), Hercules'-club, also called the Angelica tree.