資料來源 : WordNet®

toothbrush tree
     n : 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 [syn: {mustard tree}, {Salvadora persica}]