Definition of escalator
English to English noun - 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)
source: WordNet 3.0 - a stairway whose steps move continuously on a circulating belt
source: WordNet 3.0 - A stairway or incline arranged like an endless belt so that the steps or treads ascend or descend continuously, and one stepping upon it is carried up or down; -- a trade term.
source: Webster 1913
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