endocarp
/ˈɛndoʊˌkɑrp/
noun
- The hard, inner layer of the fruit wall that surrounds the seed, such as the pit of a peach or cherry.
- Botanists study the endocarp to understand how seeds are protected.
- When you crack open an olive, you find the endocarp inside.
- The endocarp of a peach is the hard stone you spit out.