A stone fruit, also called a drupe, is a fruit with a large "stone" inside. The stone is sometimes called the seed, but that is a mistake, as the seed is inside the stone. The stones can also be called a pit. Examples of stone fruits are peaches, nectarines, plums, lychees, mangoes,almonds,apples, apricots and cherries. These fruits are edible and used frequently in cooking.