escalator barrel

noun

noun

A sharply inclined shaft or tunnel in which escalators are installed underground, particularly at underground railway stations.

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.2019 October, Dan Harvey, “Crossrail Update: Whitechapel barrels on”, in Modern Railways, page 92:

Entry derived from the Wiktionary, under licence CC BY-SA 4.0 — list of authors.