refers Literally, under earth. An underground
chamber, room or series of rooms dug into the ground or bedrock beneath a fort or other work to hold supplies, ordnance stores or provisions in a secure and temperate location.
Ref: 86329/2006-09-13Other Database Pages Exist for this Phrase:
quire vault (vault - An arched apartment; especially, a ...)
List of books: Subterranean,room