cav•ernPronunciation: (kav'urn), [key]
a cave, esp. one that is large and mostly underground.
a cavity that is produced by disease, esp. one produced in the lungs by tuberculosis.
to enclose in or as if in a cavern.
to hollow out to form a cavern.
Random House Unabridged Dictionary, Copyright © 1997, by Random House, Inc., on Infoplease.