from The American Heritage® Dictionary of the English Language, 4th Edition
- n. Any of several pine trees bearing edible, nutlike seeds, especially Pinus edulis, of the western United States and Mexico. Also called nut pine.
Spanish piñón, pine nut, pine cone, augmentative of piña, from Latin pīnea, from feminine of pīneus, of pine, from pīnus, pine tree; see peiə- in Indo-European roots.(American Heritage® Dictionary of the English Language, Fourth Edition)