The hard inner layer of the pericarp of many fruits, such as the pit or stone of a cherry, peach, or olive.
inner usually woody layer of the pericarp or a fruit
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"
the hard inner (usually woody) layer of the pericarp of some fruits (as peaches or plums or cherries or olives) that contains the seed