a set of stairs inside a building, usually with a bar fixed on the wall or onto vertical poles at the side for you to hold on to
The staircase leads directly into the kitchen.
The ornate staircase in the mansion showcased exquisite craftsmanship.
For safety, a handrail ran alongside the staircase, providing support for those ascending or descending.
The winding staircase added a touch of elegance to the architectural design.
