Related to Monkey's puzzle: Monkey Puzzle Tree
|1.||(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 piñon by the Chilians.|
Webster's Revised Unabridged Dictionary, published 1913 by G. & C. Merriam Co.