The Collaborative International Dictionary of English v.0.48:

madake \madake\ n.
   large bamboo having thick-walled culms; native of China and
   perhaps Japan; widely brown elsewhere.

   Syn: giant timber bamboo, ku-chiku, Phyllostachys
        bambusoides.
        [WordNet 1.5]

WordNet (r) 3.0 (2006):

madake
    n 1: large bamboo having thick-walled culms; native of China and
         perhaps Japan; widely grown elsewhere [syn: giant timber
         bamboo, madake, ku-chiku, Phyllostachys bambusoides]