The First Commercial "moving Stairs" Began in 1899

This page is the CodyCross answer for the clue below from A Sweet Life, Group 1094, Puzzle 3 (Baklava Treats).

Question is: The First Commercial "moving Stairs" Began in 1899

and the answer is: ESCALATOR

Word Meaning:

ESCALATOR — Anything that escalates.

Definitions from Wiktionary.