Merriam-Webster Collegiate Dictionary - colchicum

 noun  Etymology: New Latin, genus name, from Latin, a kind of plant with a poisonous root, from Greek kolchikon, literally, product of Colchis  Date: 1597  1. any of a genus (Colchicum) of Old World corm-producing herbs of the lily family with flowers that resemble crocuses  2. the dried corm or dried seeds of autumn crocus containing colchicine, possessing emetic, diuretic, and cathartic action, and used to treat gout