Endocarp

from WordNet (r) 3.0 (2006)

endocarp
    n 1: the hard inner (usually woody) layer of the pericarp of
         some fruits (as peaches or plums or cherries or olives)
         that contains the seed; "you should remove the stones from
         prunes before cooking" [syn: {stone}, {pit}, {endocarp}]

from The Collaborative International Dictionary of English v.0.48

Endocarp \En"do*carp\, n. [Endo- + Gr. ? fruit: cf. F.
   endocarpe.] (Bot.)
   The inner layer of a ripened or fructified ovary.
   [1913 Webster]