[1] : The Collaborative International Dictionary of English v.0.48

undergrowth \un"dergrowth`\, n.
   that which grows under trees; specifically, shrubs or small
   trees growing among large trees. --milton.
   1913 webster

[2] : WordNet (r) 2.0

undergrowth
     n : the brush small trees and bushes and ferns etc. growing
         beneath taller trees in a wood or forest syn: underbrush,
          underwood
see also:
underbrush underwood 

Undergrowth >> U Words
Undergrowth, definition of term: Undergrowth
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