prickly ash

Short definition from Wiktionary

Noun

1. 1
   Any of a number of trees and shrubs in the genus Zanthoxylum containing Sichuan pepper and the American Midwest invasive species.
2. 2
   Aralia spinosa, a plant native to eastern North America
3. 3
   Orites excelsus, a plant native to Australia
4. 4
   Papilio pelaus, a butterfly