<p><strong>Noun</strong></p><ul><li>A cave, especially one that is large and mostly underground.</li><li>A cavity that is produced by disease, especially one produced in the lungs by tuberculosis.</li></ul><p><strong>Verb</strong></p><ul><li>To enclose in or as if in a cavern.</li><li>To hollow out to form a cavern.</li></ul><p><strong>End of Response</strong></p>