next door(r = adv.all) in the adjacent apartment, in the adjacent house - at or in or to the adjacent residence; "the criminal had been living next door all this time"

accordion door, back door, barn door, bi-fold door, car door, cargo door, door, door guard, door latch, door prize, double door, dutch door, exterior door, fire door, folding door, french door, front door, half door, hatchback door, interior door, louvered door, next, next friend, next of kin, next world, open door, outside door, revolving door, screen door, service door, show the door, side door, sliding door, stage door, storm door, swing door, swinging door, trap door, wicket door