Escalator

n. mechanical moving stairway

An escalator is a conveyor transport device for transporting people, consisting of individual, linked steps that move up or down on tracks, which keep the treads horizontal.As a power-driven, continuous moving stairway designed to transport passengers up and down short vertical distances, escalators are used around the world to move pedestrian traffic in places where elevators would be impractical. Principal areas of usage include department stores, shopping malls, airports, transit systems, convention centers, hotels, and public buildings.
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Noun
1. a clause in a contract that provides for an increase or a decrease in wages or prices or benefits etc. depending on certain conditions (as a change in the cost of living index)
(synonym) escalator clause
(hypernym) article, clause
2. a stairway whose steps move continuously on a circulating belt
(synonym) moving staircase, moving stairway
(hypernym) stairway, staircase, stairs, steps

n. escalator, mechanical moving stairway

tehn. escalator