any araucaria tree; esp., a tall tree (Araucaria araucana) with stiff pointed leaves, edible nuts, and hard wood, widely grown as an ornamental
Origin of monkey puzzleso named because the tangled branches are difficult to climb
A coniferous evergreen tree (Araucaria araucana) native to Chile and Argentina, having whorled branches covered with scalelike, overlapping, sharp-pointed leaves.
Origin of monkey-puzzlePerhaps from the obstacle its intertwined branches would pose
(plural monkey puzzles)