A pipe for smoking, made from the roots of that shrub.
The white heath (Erica arborea), a thorny Mediterranean shrub.
Any of many plants with thorny stems growing in dense clusters, such as many in the Rosa, Rubus, and Smilax genera.
Anything sharp or unpleasant to the feelings.
The foliage of creosote bush, Larrea divaricata, when used as a medicinal herb.
A region of shrubs, typically dry in the summer and rainy in the winter. The coast of the Mediterranean is such a region.