any fruit, as a peach, cherry, plum, etc., consisting of an outer skin, a usually pulpy and succulent middle layer, and a hard and woody inner shell usually enclosing a single seed.
drupe (drōōp) n. A fleshy fruit, such as a peach, plum, or cherry, usually having a single hard stone that encloses a seed. Also called stone fruit.
[Latin drūpa, druppa, overripe olive, from Greek druppā, olive, possibly alteration of drupepēs, ripened on the tree : drūs, dru-, tree; see deru- in Indo-European roots + peptein, pep-, to ripen; see pekw- in Indo-European roots.]