The Collaborative International Dictionary of English v.0.48:

Drupe \Drupe\ (dr[udd]p), n. [F. drupe, L. drupa an overripe,
   wrinkled olive, fr. Gr. dry`ppa.] (Bot.)
   A fruit consisting of pulpy, coriaceous, or fibrous exocarp,
   without valves, containing a nut or stone with a kernel. The
   exocarp is succulent in the plum, cherry, apricot, peach,
   etc.; dry and subcoriaceous in the almond; and fibrous in the
   cocoanut. Drupel

WordNet (r) 3.0 (2006):

drupe
    n 1: fleshy indehiscent fruit with a single seed: e.g. almond;
         peach; plum; cherry; elderberry; olive; jujube [syn:
         drupe, stone fruit]