mustard tree

Noun	1.	mustard tree - evergreen South American shrub naturalized in United States; occasionally responsible for poisoning livestock Synonyms: Nicotiana glauca, tree tobacco
	2.	mustard tree - 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 Synonyms: Salvadora persica, toothbrush tree

Nicotiana glauca, tobacco, tree tobacco