An escalator barrel
with three escalators at Marble Arch
tube station, London
escalator barrel (plural escalator barrels)
- A sharply inclined shaft or tunnel in which escalators are installed underground, particularly at underground railway stations.
2019 October, Dan Harvey, “Crossrail Update: Whitechapel barrels on”, in Modern Railways, page 92:
The escalator barrel up to the concourse is also approaching completion, missing only a few panels and the digital screens that will display ads to those ascending and descending the three escalators.