Drupe

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The peach is a typical drupe (stone fruit)

In botany, a drupe is a type of fruit in which an outer fleshy part (exocarp or skin and mesocarp or flesh) surrounds a shell (the pit or stone) of hardened endocarp with a seed inside. These fruits develop from a single carpel, and mostly from flowers with superior ovaries. Some plants that produce drupes are:

jujube
mango
olive
all members of the genus Prunus, including almond (in which the mesocarp is somewhat leathery), apricot, cherry, peach, and plum.

The term stone fruit can be a synonym for "drupe" or, commonly, it can mean the fruit of the Prunus species specifically.

Drupes, with their sweet, fleshy outer layer, attract the attention of animals as a food, and the plant population benefits from the resulting dispersal of its seeds. The endocarp (pit or stone) can be swallowed (or is just dropped after the fleshy part is eaten), pass through the digestive tract, and returned to the soil in a feces with the seed inside unharmed.

The coconut is also a drupe, but the mesocarp is fibrous or dry (in this case, called a husk), so this type of fruit is classified as a simple dry fruit, fibrous drupe.

Blackberry, a bramble fruit
of aggregated drupelets ()

A drupelet is one unit of an aggregate fruit that has essentially the structure of a drupe. Bramble fruits (for example, blackberry or raspberry) are aggregates of drupelets.