poweredstairway
nounUK /ˈpaʊəd ˈstɛəweɪ/
US /ˈpaʊərd ˈstɛrweɪ/
A powered stairway is a set of stairs that moves by itself to carry people up or down.
We rode the powered stairway to the second floor of the mall.
OTHER MEANINGS
2. A staircase equipped with a motorized lift or chair to help people climb.
The powered stairway helped Grandma reach her bedroom upstairs.
3. A mechanical system that moves steps in a loop to transport riders between levels.
The airport installed a new powered stairway near the gates.
4. Any stair structure driven by electricity rather than by walking.
Engineers tested the powered stairway before the building opened.