Walnut is a city located in the United States. While specific geographic coordinates or regional details are not provided in the source material, it is identified as an American municipality.
The name walnut is also associated with the edible seed of trees within the genus Juglans, most notably the Persian or English walnut (Juglans regia). These seeds are classified as accessory fruits because their outer covering is technically an involucre rather than part of the carpel. Consequently, they are described as drupe-like nuts rather than true drupes.