movingstaircase
nounUK /ˈmuːvɪŋ ˈsteəkeɪs/
US /ˈmuːvɪŋ ˈsterkeɪs/
A moving staircase is a set of steps that carries people up or down by itself.
We rode the moving staircase to the second floor of the mall.
OTHER MEANINGS
2. A powered stairway in a public building that moves continuously in one direction.
The airport installed a new moving staircase near the gates.
3. A mechanical device with linked steps that loop around to transport passengers between floors.
She stepped onto the moving staircase and held the rail.
4. Informal term for an escalator, often used by children.
My little brother calls the escalator a moving staircase.