A fire escape.

A fire escape.

The stairs, landings, hallways, or other portions of the public hall through which it is necessary to pass when going from the entrance floor to the other floors of a building.

plural of stair hall

A flight of stairs that is constructed to deliberately disrupt the natural strides of people walking or running on them.

stairs leading to a trapdoor

Alternative form of stair wire

A thin stair rod; a wire used on stair carpet to keep it in place in the angle between two steps.

(archaic) Upstairs; in or on an upper floor.

(archaic) The part of a building above the ground level.