ricin

English Thesaurus

1. a toxic protein extracted from castor beans; used as a chemical reagent; can be used as a bioweapon (noun.substance)

hypernym	:	albumen, albumin,
definition	:	a simple water-soluble protein found in many animal tissues and liquids (noun.substance)

hypernym	:	toxin,
definition	:	a poisonous substance produced during the metabolism and growth of certain microorganisms and some higher plant and animal species (noun.substance)