• (n.) The musky root of an Asiatic umbelliferous plant, Ferula Sumbul. It is used in medicine as a stimulant.
Sum'bul noun [ Pers.] The musky root of an Asiatic umbelliferous plant, Ferula Sumbul . It is used in medicine as a stimulant. [ Written also sumbal .] - - 
Sumbul is a herbaceous plant belonging to the family Umbelliferae. It is a native of Turkestan, but is cultivated in Britain. The root is used in medicine as a stimulant.