cavity Meaning, Definition & Usage

  1. noun a sizeable hole (usually in the ground)
    pit.
    • they dug a pit to bury the body
  2. noun space that is surrounded by something
    enclosed space.
  3. noun soft decayed area in a tooth; progressive decay can lead to the death of a tooth
    tooth decay; caries; dental caries.
  4. noun (anatomy) a natural hollow or sinus within the body
    cavum; bodily cavity.

WordNet

Cav"i*ty noun
Etymology
L. cavus hollow: cf. F. cavité.
Wordforms
plural Cavities
Definitions
  1. Hollowness. Obs.
    The cavity or hollowness of the place. Goodwin.
  2. A hollow place; a hollow; as, the abdominal cavity.
    An instrument with a small cavity, like a small spoon. Arbuthot.
    Abnormal spaces or excavations are frequently formed in the lungs, which are designated cavities or vomicæ. Quain.

Webster 1913