mustard tree

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun evergreen South American shrub naturalized in United States; occasionally responsible for poisoning livestock
• noun glabrous or pubescent evergreen shrub or tree of the genus Salvadora; twigs are fibrous and in some parts of the world are bound together in clusters and used as a toothbrush; shoots are used as camel fodder; plant ash provides salt