cavity

What it means

1. A hole or hollow depression in a solid object.
   1. anatomyA hollow area within the body.
   2. businessThe female part of a mold: the depression itself or (metonymically) the half of the mold that contains it.
2. dentistryA small or large hole in a tooth caused by caries; often also a soft area adjacent to the hole also affected by caries.

   Jim got two cavities filled at the dentist's office yesterday.

   Synonyms: caries

In a sentence

Jim got two cavities filled at the dentist's office yesterday.

Where it comes from

1. Late Latincavitās
2. Middle Frenchcavité
3. Englishcavity

From Middle French cavité or Late Latin cavitās, from cav(i) (“hollow, excavated, concave”) + -tās (“-ity”, nominal suffix). First attested in the Mid-16th c.