pe·can 
(pĭ-kän, -kăn, pēkăn)
(pĭ-kän, -kăn, pēkăn)n.
1. A deciduous tree (Carya illinoinensis) of the central and southern United States, having deeply furrowed bark, pinnately compound leaves, and edible nuts.
2. The smooth, thin-shelled oval nut of this tree.
[North American French pacane, from Illinois pakani, nut, from Proto-Algonquian *paka·n-, large nut.]