'Ricinus' definitions:

Definition of 'Ricinus'

(from WordNet)
noun
A genus of herb having only one known species: castor-oil plant [syn: Ricinus, genus Ricinus]

Definition of 'Ricinus'

From: GCIDE
  • Ricinus \Ric"i*nus\, n. [L., the castor-oil plant.] (Bot.) A genus of plants of the Spurge family, containing but one species (Ricinus communis), the castor-oil plant. The fruit is three-celled, and contains three large seeds from which castor oil is expressed. See Palma Christi. [1913 Webster]