moving staircase

English

Noun

moving staircase (plural moving staircases)

1. An escalator.
   • 2008, John Irwin, Modern Britain: An Economic and Social History, page 27:

     In terms of the income scale British society has been compared to a group of people on a moving staircase. While the staircase as a whole moves upwards the relative position of the people on it remains largely unchanged.