noun
or moving stairway
: a set of stairs arranged like an endless belt and power driven so that the steps or treads may be made to ascend or descend continuously — called also escalator
noun
or moving stairway
: a set of stairs arranged like an endless belt and power driven so that the steps or treads may be made to ascend or descend continuously — called also escalator
Webster's New International English Dictionary. Новый международный словарь английского языка Webster. 2012