mustard tree   (TTS Sound)

The noun mustard tree has 2 senses

• tree tobacco, mustard tree, Nicotiana glauca -- (evergreen South American shrub naturalized in United States; occasionally responsible for poisoning livestock)


• toothbrush tree, mustard tree, Salvadora persica -- (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)