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.
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Xan·thox·y·lum n. Bot. A genus of prickly shrubs or small trees, the bark and rots of which are of a deep yellow color; prickly ash.
Note: ☞ The commonest species in the Northern United States is Xanthoxylum Americanum. See Prickly ash, under Prickly.
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