Real Dictionary

drupe in American English
any fruit with a soft, fleshy part (mesocarp) covered by a skinlike outer layer (exocarp, or epicarp) and surrounding an inner stone (endocarp) that contains the seed, as an apricot, cherry, plum, etc.
noun: 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 in British English
noun: 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