escalator

noun

1. Also called moving staircase, moving stairway. a continuously moving stairway on an endless loop for carrying passengers up or down.
2. a means of rising or descending, increasing or decreasing, etc., especially by stages: the social escalator.
3. escalator clause.

adjective

4. of, relating to, or included in an escalator clause: The union demands escalator protection of wages.

noun

1. a moving staircase consisting of stair treads fixed to a conveyor belt, for transporting passengers between levels, esp between the floors of a building
2. short for escalator clause