Drupes
In the study of plants, a drupe or stone fruit is a type of Fruits in which an outer fleshy part (made of the exocarp ("outer fruit" or skin) and mesocarp ("middle fruit" or flesh)) surrounds a single shell (the pip, pit, stone or pyrena) of a hardened endocarp ("inner fruit" or seed coat) with a seed (kernel) inside.
In aggregate fruits, each individual fruit is called a drupelet.