‖n. [ NL., fr. Gr. me`las, me`lanos, black + a"i^ma blood.] (Med.) A morbid condition in which the blood contains black pigment either floating freely or imbedded in the white blood corpuscles. [1913 Webster]
n. [ Gr. me`las, me`lanos, black + &unr_; leading, driving, &unr_; to lead. ] (Med.) A medicine supposed to expel black bile or choler. [ Obs. ] [ 1913 Webster ]