myeloblastic leukemia: a malignant neoplasm of blood-forming tissues; characterized by numerous myeloblasts in the blood stream
leukemia: malignant neoplasm of blood-forming tissues; characterized by abnormal proliferation of leukocytes; one of the four major types of cancer
derris: any of various usually woody vines of the genus Derris of tropical Asia whose roots yield the insecticide rotenone; several are sources of native fish and arrow poisons