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