1. a moving staircase consisting of a circulating belt of steps driven by a motor

Examples

• Take the escalator to the second floor.
• The escalator in the mall was out of order.
• She held the handrail while riding the escalator.
• The department store has escalators connecting all five floors.
• Stand to the right on the escalator so others can walk past.
• The escalator moves slowly to ensure passenger safety.