Noun escalator has 2 senses
  1. escalator clause, escalator - 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)
    --1 is a kind of article, clause
  2. escalator, moving staircase, moving stairway - a stairway whose steps move continuously on a circulating belt
    --2 is a kind of stairway, staircase, stairs, steps
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