Cav"i*ty (?), n.; pl. Cavities (#). [L. cavus hollow: cf. F. cavité.] 1. Hollowness. [Obs.]

The cavity or hollowness of the place.

2. A hollow place; a hollow; as, the abdominal cavity.

An instrument with a small cavity, like a small spoon
. Arbuthnot.

Abnormal spaces or excavations are frequently formed in the lungs, which are designated cavities or vomicæ.

Body cavity, the cœlum. See under Body.