castor bean

from WordNet (r) 3.0 (2006)
castor bean
    n 1: the toxic seed of the castor-oil plant; source of castor
         oil
    
from The 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]
    

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