Definition of zanthoxylum
1 a
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
plural -s
or less commonly
xanthoxylum
: the dried bark of prickly ash or hercules'-club formerly used as a diaphoretic and stimulant
