monkey puzzle

from WordNet (r) 3.0 (2006)

monkey puzzle
    n 1: large Chilean evergreen conifer having intertwined branches
         and bearing edible nuts [syn: {monkey puzzle}, {chile
         pine}, {Araucaria araucana}]

from The Collaborative International Dictionary of English v.0.48

Monkey's puzzle \Mon"key's puz"zle\ (Bot.)
   A lofty coniferous Chilian tree ({Araucaria araucana},
   formerly {Araucaria imbricata}), the branches of which are so
   crowded and intertwisted "as to puzzle a monkey to climb." It
   is also called {monkey puzzle} and {monkey puzzle tree}. The
   edible nuts are over an inch long, and are called pi[~n]on by
   the Chilians.
   [1913 Webster]