What does pecan mean in cooking?

pecan means: Carya Oliviformis is a native North American hickory tree whose nut has a soft, smooth shell and contains a golden brown, bilobed kernel. The kernel also contains a lot of fat. (in Cooking Dictionary)

What else does pecan mean?

A deciduous tree (Carya illinoinensis) The central and southern United States have deeply furrowed bark and pinnately-compound leaves. They also contain edible nuts. (in Merlin Dictionary)

This tree’s oval, smooth-shelled, flat nut is very attractive. (in Merlin Dictionary)