Definitions of cavity

1. ( anatomy) a natural hollow or sinus within the body

2. soft decayed area in a tooth; progressive decay can lead to the death of a tooth

3. space that is surrounded by something

4. A hollow place: hollowness: an opening.

5. A hollow place.

6. A hollow or sunken space; hole.

7. A hollow in anything.

8. See cave.

9. A hollow, enclosed or cup- shaped; e. g. amniotic, glenoid cavity.