vincristine

noun

1. (countable, uncountable)A cytotoxic compound C₄₆H₅₆N₄O₁₀ of the alkaloid class obtained from the Madagascar periwinkle and used especially in the form of its sulfate to treat acute leukemia and other cancers.

   “Although originally intended as an antidiabetic, vincristine at small doses was found to kill leukemia cells.”