monkey puzzle definition by Webster's New World
Webster's New World College Dictionary Copyright © 2010 by Wiley Publishing, Inc., Cleveland, Ohio. Used by arrangement with John Wiley & Sons, Inc.
any araucaria tree; esp., a tall tree (Araucaria araucana) with stiff pointed leaves, edible nuts, and hard wood, widely grown as an ornamental
monkey puzzle definition by American Heritage Dictionary
A coniferous evergreen tree (Araucaria araucana) native to Chile, having intricately ramifying branches covered with overlapping, leathery, lanceolate, prickle-tipped leaves.
Origin: Perhaps from the obstacle its intertwined branches would pose.