drupe (DROOP) - n., (Bot.) a fruit with a skin covering a fleshy interior covering a hard shell containing a single seed.
Specifically, an indehiscent fruit, one that doesn't split open when ripe to release its seeds -- or in this case, seed. The inner shell is often called a stone, thus the synonym stone fruit. These drupes are some sort of plums:

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Other drupes include apricots, cherries, peaches (and all other members of the genus Prunus), pistachios, loquats, black pepper, dates, coconuts, açaí berries (and most other palms), mangoes, coffees, and olives, plus blackberries, raspberries, and other bramble-fruits are compound drupes. First used by botanists around 1750 from Latin drūpa, wrinkled olive/overripe olive, from Ancient Greek druppā, olive, possibly alteration of drupepēs, ripened on the tree.
---L.
Specifically, an indehiscent fruit, one that doesn't split open when ripe to release its seeds -- or in this case, seed. The inner shell is often called a stone, thus the synonym stone fruit. These drupes are some sort of plums:
Thanks, WikiMedia!
Other drupes include apricots, cherries, peaches (and all other members of the genus Prunus), pistachios, loquats, black pepper, dates, coconuts, açaí berries (and most other palms), mangoes, coffees, and olives, plus blackberries, raspberries, and other bramble-fruits are compound drupes. First used by botanists around 1750 from Latin drūpa, wrinkled olive/overripe olive, from Ancient Greek druppā, olive, possibly alteration of drupepēs, ripened on the tree.
---L.