Cavern(n.) A large, deep, hollow place in the earth; a large cave.
Caverned(a.) Containing caverns.
Caverned(a.) Living in a cavern.
Cavernous(a.) Full of caverns; resembling a cavern or large cavity; hollow.
Cavernous(a.) Filled with small cavities or cells.
Cavernous(a.) Having a sound caused by a cavity.

Words within caverns