Pinon \Pi[~n]"on\, n. [Sp. pi[~n]on.] (Bot.)
(a) The edible seed of several species of pine; also, the
tree producing such seeds, as {Pinus Pinea} of
Southern Europe, and {P. Parryana, cembroides, edulis,
and monophylla}, the nut pines of Western North
America.
(b) See {Monkey's puzzle}. [Written also {pignon}.]