A trolley fitted with a set of rotating wheels so that it can be pushed or pulled up or down steps / An exercise machine on which the user simulates the action of climbing a staircase

The landing at the top of a staircase.

plural of stairclimber

plural of stairtower

A tower with stairs on the inside.

Without stairs.

plural of stairgate

A gate fitted across a domestic staircase to prevent young children from climbing the stairs, or falling down them.

plural of staircase lock

A set of locks on a waterway canal which rise steeply, and consisting of lock gates where the top gate of one lock is also the bottom gate of the next lock, not having a pound between each level.