subbasement
nounEtymology From sub- + basement.
1
A basement located beneath another basement.
- Joan H. Geismar is trying to unravel the mystery of old stone walls in the subbasement of Federal Hall National Memorial on Wall Street.2007 February 8, David W. Dunlap, “What May Have Made Good Neighbors Now Present a Puzzle”, in New York Times:
- Derived terms
- sub-subbasement, sub-sub-subbasement, sub-sub-sub-subbasement