Definition of zanthoxylum
1a capitalized : a genus of widely distributed shrubs or trees (family Rutaceae) having odd-pinnate leaves, small greenish flowers with 2 to 5 pistils, and 2-valved fleshy capsules b plural -s : any plant of the genus Zanthoxylum
2 less commonly xanthoxylum plural -s : the dried bark of prickly ash or hercules'-club formerly used as a diaphoretic and stimulant
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Origin and Etymology of zanthoxylum
New Latin, irregular from xanth- + -xylum
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