piñon definition by American Heritage Dictionary
also pin·yonnoun pl. pi·ñons or pi·ño·nes also pin·yons
Any of several pine trees bearing edible, nutlike seeds, especially Pinus edulis, of the western United States and Mexico. Also called nut pine.
Origin: 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.