piñon

from The American Heritage® Dictionary of the English Language, 5th Edition.

• noun Any of several pine trees of northern Mexico and the southwest United States that bear edible, nutlike seeds, especially Pinus edulis.
• noun An edible seed of any of these trees.

from The Century Dictionary.

• noun In Mexico, the edible seed of Pinus cembroides.
• noun One of several nut-pines of the Rocky Mountain region, as Pinus Parryana, P. edulis, and P. monophylla; also, a seed of one of these trees.

from the GNU version of the Collaborative International Dictionary of English.

• noun The edible seed of several species of pine; also, the tree producing such seeds, as Pinus Pinea of Southern Europe, and Pinus Parryana, cembroides, edulis, and monophylla, the nut pines of Western North America.
• noun See monkey's puzzle.

from Wiktionary, Creative Commons Attribution/Share-Alike License.

• noun uncountable, countable Any of several North American pines that bear edible seeds (pine nuts), especially Pinus edulis; the nut pine.
• noun countable, uncountable A pine nut.

from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.

• noun any of several low-growing pines of western North America