A hollow or recess in a rock, a cave, cavern, den. Scottish and northern.

The lair or habitation of a wild beast.

A hollow place opening more or less horizontally under the ground; a cavern, den, habitation in the earth.

A cave, tunnel, or tomb in a rock or cliff. Obsolete.

A cave or cavern; a grotto.

A hollow place under ground; a subterranean (or submarine) cavity; a cave.

A natural cave or grotto; the den or hole of a wild beast. Obsolete.

A cave.

A cave or cavern; esp. (chiefly with reference to Virgil's Aeneid) the cavern in which the Cumaean Sibyl delivered oracular pronouncements.

An underground cavity. Obsolete.

see quot. 1728.

A cave, cavern, or grotto. Now rare.

A natural cavern, cave, or overarched space; †a deep hole or pit.

An underground cavity, esp. one at least as large as a room; a relatively spacious area within a cave.

A cave, a cavern; (also) a lair, a den. Also figurative and in figurative contexts.

An underground space or passage.

A cave. Obsolete. rare.

A cave.

Mining. English regional (Derbyshire). A large cavern; also called self-open. Also (rare): a natural fissure.

A hole, cave, or passage under ground.

An underground chamber, cave, dwelling, etc.

= subterranean, n. 2.

A cavity in a rock or a mineral vein. Cf. vug, n. See also lough, n.3

U.S. A cavern. Cf. sense 1b.

A cavity in a rock; a cave, a hollow.