escalator · noun C /ˈes.kəˌleɪt̬.ər/
escalator
B2 moving stairs that take people from one level of a building to another
Dictionary examples:
I'll meet you by the up/down escalator on the second floor.
Do you want to use the elevator or take the escalator?
Learner example:
The newly decorated section is fairly modern [in] style with escalators and touch-screen ticket machine[s]. (First Certificate in English; B2; Thai)