cuttlebones
/ˈkʌtəlˌboʊnz/
noun
- Plural of cuttlebone; multiple internal shells of cuttlefish.
- She collected several cuttlebones from the beach to use in her art project.
- The pet shop had a bin full of cuttlebones for bird owners.
- Cuttlebones are often ground up and added to soil as a natural fertilizer.