[{"Bold_text": "noun", "List Items": ["a continuously moving staircase on an endless loop for carrying passengers up or down.", "a means of rising or descending, increasing or decreasing, etc., especially by stages:the social escalator.", "escalator clause(def) escalator clause(def)."]}, {"Bold_text": "adjective", "List Items": ["of, relating to, or included in an escalator clause:The union demands escalator protection of wages."]}]