- prickly ash - any of a number of trees or shrubs of the genus Zanthoxylum having spiny branches
--1 is a kind of tree
--1 is a member of Zanthoxylum, genus Zanthoxylum
--1 has particulars:toothache tree, sea ash, Zanthoxylum americanum, Zanthoxylum fraxineum; Hercules'-club, Hercules'-clubs, Hercules-club, Zanthoxylum clava-herculis - prickly ash, Orites excelsa - Australian tree having alternate simple leaves (when young they are pinnate with prickly toothed margins) and slender axillary spikes of white flowers
--2 is a kind of tree
--2 is a member of Orites, genus Orites - prickly ash, Orites excelsa - Australian tree having alternate simple leaves (when young they are pinnate with prickly toothed margins) and slender axillary spikes of white flowers