Drupe -
There is also a diminutive form, druplet:an indehiscent fruit consisting of outer epicarp, fleshy or fibrous mesocarp, and stony endocarp enclosing a single seed, as in the peach, plum, and cherry
I'll leave it for you to look up pericarp.a little drupe, as one of the individual pericarps composing the blackberry.
Hope you like it.