berry
berry, in botany, a simple fleshy fruit that usually has many seeds, such as the banana, grape, melon, orange, and tomato. As a simple fruit, a berry is derived from a single ovary of an individual flower. The middle and inner layers of the fruit wall often are not distinct from each other. Together with drupes (e.g., cherry, mango, and olive) and pomes (e.g., apple, pear, and loquat), berries are one of the main types of fleshy fruits.
Any small fleshy fruit is popularly called a berry, especially if it is edible. Raspberries, blackberries, and strawberries, for example, are not true berries but are aggregate fruits—fruits that consist of a number of smaller fruits. Cranberries and blueberries, however, are true botanical berries.
There are two specific types of berries that characterize certain taxonomic groups. The leathery-rinded berry of citrus fruits (genus Citrus) is called a hesperidium. The elongated tough-skinned fruits of the family Cucurbitaceae, including watermelons, cucumbers, and gourds, are a type of berry referred to as pepos.