Claim: Ricin is poisonous.
Evidence: Ricin -LRB- -LSB- ˈraɪsɪn -RSB- -RRB- is a highly toxic , naturally occurring lectin -LRB- a carbohydrate-binding protein -RRB- produced in the seeds of the castor oil plant , Ricinus communis.
Sometimes the word is more or less synonymous with poisoning in everyday usage.