'Rhus' definitions:

Definition of 'Rhus'

From: WordNet
noun
Deciduous or evergreen shrubs and shrubby trees of temperate and subtropical North America, South Africa, eastern Asia and northeastern Australia; usually limited to nonpoisonous sumacs (see genus Toxicodendron) [syn: Rhus, genus Rhus]

Definition of 'Rhus'

From: GCIDE
  • Rhus \Rhus\, n. [L., sumac, fr. Gr. ???.] (Bot.) A genus of shrubs and small treets. See Sumac. [1913 Webster]