cavity
/ˈkævɪti/
noun
- A hole or hollow space inside something solid.
- Birds sometimes nest in a cavity of a tree trunk.
- The dentist found a small cavity in my back tooth.
- The wall had a cavity where the pipes were installed.
- A decayed area in a tooth caused by bacteria.
- Brushing twice a day helps prevent cavities.
- If you eat too much sugar, you might get a cavity.
- The dentist filled the cavity with a white composite material.