subbasement Definition

basement, storeroom, upstairs, broom closet, cellar, crawlspace, attic, stairwell, cavelike, root cellar, downstairs, dumbwaiter, elevator, catacomb, rabbit warren, garage, undercroft, alcove, hatchway, elevator shaft, antechamber, underground, closet, hallway, strongroom, cockloft, workroom, cavern, coatroom, staircase, crypt, scullery, spiral staircase, loft, cubbyholes, freight elevator, floors, firetrap, vaults, skylit, musty, rathskeller, washhouse, dank, brownstone, building, cubicles, anterooms, bowels, rumpus room, garret, quonset hut, tomblike, dungeon, bathysphere, warren, diningroom, vestibules, gaslights, annexe, kneehole, newel post, recesses, ceilings, hoistway, doorless, beaux arts, mansard, mildewing, carrel, quonset, passageway, rowhouse, genizah, speakeasy, breezeways, airlocks, potting shed, cinder block, storage room, hovel, atrium, lair, edifice, wine cellar, corncrib, cupola, belowground, postholes, rooms, semidarkness, bowfront, rolltop, rotunda, flophouse, breezeway, sanctum, ballroom, washateria, junk heap,