A plant toxin extracted from Castor Beans. This has a toxicity in humans at levels as small as .3 grams. It is considered to be the most deadly plant toxin; twice as deadly as Cobra Venom.
Jimmy took some Ricin with a tall glass HCl and a Darvon Cocktail. How sad.
by Snowphish April 8, 2007
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Free ricin it' is when you sit in your english class
and play on www.freerice.com to help people
in needy countries get free rice.

i love free rice!
hey elizabeth what are you doing?

oh i'm just free ricin' it.
by caroline12365 March 3, 2008
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