- an olive-shaped, edible nut with a thin, smooth shell
- the North American tree (Carya illinoensis) of the walnut family on which it grows
Origin of pecan18th-c. Mississippi Valley French pacane ; from Illinois pakani
- A deciduous tree (Carya illinoinensis) of the central and southern United States, having deeply furrowed bark, pinnately compound leaves, and edible nuts.
- The smooth, thin-shelled oval nut of this tree.
Origin of pecanNorth American French pacane, from Illinois pakani.