ESCALATOR


Meaning of ESCALATOR in English

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

Origin

early 20th cent. (orig. US, as a trade name): from escalade 'climb a wall by ladder' (from escalade ), on the pattern of elevator .

Concise Oxford English vocab.      Сжатый оксфордский словарь английского языка.