an old subterranean burial chamber, eg a catacomb.
An underground space or cavern (additionally made use of figuratively).
The subterraneous part of a building, such as amphitheaters, when it comes to solution of the games; in addition, subterranean galleries, as the catacombs.
In structure, that section of a building which will be below the level of the floor, including cellars, vaults, etc.; additionally, any underground building, chamber, etc., while the syringes of ancient Egypt, or the tombs of Etruscans. In addition hypogee.