An underground dwelling, basement, or chamber; = souterrain, n.

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

figurative. A place likened to a bees' nest, e.g. a subterranean retreat or ‘hole,’ a well-filled storehouse.

In northern Africa and the Middle East: a storehouse, cistern, prison, etc., located underground.

An underground chamber, cave, dwelling, etc.

= subterranean, n. 2.

A semi-subterranean dwelling or hut, usually formed of timber covered with earth or turf, of the indigenous peoples of northern and central Asia…

The name applied in Scotland to a cave or underground dwelling-place used by early inhabitants of the country.

A dwelling, region, etc., below the surface of the earth. Also (with the): the underworld.

A natural cave or opening in ice, esp. at the foot or side of a glacier. Also: a cave hollowed out of ice as a shelter.

an Australian Aboriginal cave-dwelling.

A rough kind of dwelling formed by an excavation in the ground (usually in a slope or bank), roofed with turf, canvas, etc. Also attributive.

A man-made underground passage or chamber lined with stone; a souterrain.

Archaeology. A hollow beneath overhanging rock; a rock shelter.

A semi-subterranean dwelling, the floor and walls being made by excavation; esp. one used by North American Indians. Cf. house pit n. at house, n.1…