subbasement
Below the basement
A subbasement is a floor below the basement of a building, typically used for utilities, storage, or mechanical equipment.
Large buildings may have multiple subbasements, numbered downward: The parking garage extends to the third subbasement.
The term emphasizes depth beneath the main basement level.
Below ground or countercultural
- descendMove to lower position
- beneathIn a lower position
- subterraneanBeneath earth's surface
- deepFar from surface
excavation · foundation · bedrock · bottom · lowest · downstairs · sublevel · cellar
Underlying support structure
- concreteSolid building mixture
- footingsStructural foundation supports
- excavationAct of unearthing
- structuralRelating to building framework
reinforced · load-bearing · waterproofing · drainage · crawlspace · slab · pilings · contractors
Stored historical records
- boxesSix-sided containers
- inventoryCatalog of held assets
- shelvesHorizontal storage platforms
- warehouseBulk goods storage building
stockpile · repository · supplies · crates · bins · lockers · storeroom · vault
Reinforced subterranean stronghold
- refugePlace of safety
- emergencySerious sudden danger
- hideoutSecret place of refuge
- survivalRemaining alive against odds
reinforced · secure · protected · stronghold · evacuation · air-raid
Kept out of sight
- concealedMade invisible deliberately
- secretConcealed information
- clandestineConcealed from authorities
- covertIntentionally concealed
speakeasy · bootlegger · prohibition · smuggling · contraband · black-market · illicit · passageway
underground
Below ground or countercultural
- descendMove to lower position
- beneathIn a lower position
- subterraneanBeneath earth's surface
deep · excavation · foundation · bedrock · bottom · lowest · downstairs · sublevel · cellar · descent
foundation
Underlying support structure
- concreteSolid building mixture
- footingsStructural foundation supports
- excavationAct of unearthing
structural · reinforced · load-bearing · waterproofing · drainage · crawlspace · slab · pilings · contractors · blueprints
archive
Stored historical records
warehouse · stockpile · repository · supplies · crates · bins · lockers · storeroom · vault · records
bunker
Reinforced subterranean stronghold
survival · reinforced · secure · protected · stronghold · evacuation · air-raid
hidden
Kept out of sight
- concealedMade invisible deliberately
- secretConcealed information
- clandestineConcealed from authorities
covert · speakeasy · bootlegger · prohibition · smuggling · contraband · black-market · illicit · passageway · forgotten
- building floorsfirst floor, second floor, third floor, ground floor, top floor
- skyscraper constructionsteel frame, tower crane, foundation, pile driving, scaffolding
- depth levelssurface, shallow, deep, bottom, underground