mandrake root

from WordNet (r) 3.0 (2006)

mandrake root
    n 1: the root of the mandrake plant; used medicinally or as a
         narcotic [syn: {mandrake root}, {mandrake}]

from The Collaborative International Dictionary of English v.0.48

mandrake root \mandrake root\ n.
   The root of the mandrake plant; used medicinally or as a
   narcotic; as a substance it is also called {mandrake}.
   [WordNet 1.5]