A walnut is actually a drupe, which is a fruit that contains an outer husk. Other drupes, include peaches, nectarines and blackberries. Also known as "false nuts," walnuts share this classification with kukui nuts, Brazil nuts and hazelnuts.
About this Author
Chelsea Hoffman resides in Las Vegas, Nev., where she is currently working on a dramatic novel titled "Chloe." A published freelance writer for over 15 years, Hoffman writes for GardenGuides, Travels, and a variety of other online and print venues.