castor bean

2 definitions found

castor bean - Collaborative International Dictionary of English v.0.48 :

  Castor bean \Cas"tor bean`\ (Bot.)
     The bean or seed of the castor-oil plant (Ricinus communis,
     or Palma Christi.)
     [1913 Webster]

castor bean - WordNet (r) 2.1 (2005) :

  castor bean
      n 1: the toxic seed of the castor-oil plant; source of castor
           oil