Wiktionary
fludarabine
n. A particular drug used in chemotherapy.
Wikipedia
Fludarabine
Fludarabine or fludarabine phosphate (Fludara) is a chemotherapy drug used in the treatment of hematological malignancies (cancers of blood cells such as leukemias and lymphomas). It is a purine analog, which interferes with DNA synthesis.
It is on the WHO Model List of Essential Medicines, the most important medications needed in a basic health system.