The Collaborative International Dictionary of English v.0.48:

Podophyllum \Pod`o*phyl"lum\, n. [NL., fr. Gr. poy`s, podo`s,
   foot + fy`llon leaf.]
   1. (Bot.) A genus of herbs of the Barberry family, having
      large palmately lobed peltate leaves and solitary flower.
      There are two species, the American Podophyllum
      peltatum, or May apple, the Himalayan Podophyllum
      Emodi.
      [1913 Webster]

   2. (Med.) The rhizome and rootlet of the May apple
      (Podophyllum peltatum), -- used as a cathartic drug.
      [1913 Webster]

WordNet (r) 3.0 (2006):

Podophyllum
    n 1: perennial rhizomatous herbs [syn: Podophyllum, genus
         Podophyllum]