Phrase guide

tube train

noun · 1 senses · updated from the 2026-07-25 local source snapshot

Definitions and examples are grouped by meaning. Pronunciation, history, word forms, translations, descendants, synonyms, antonyms, derived terms, and related words appear whenever the source provides them.

Sound

Pronunciation

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1

noun

Meaning 1

A smaller-profile underground train which operates through the tube tunnels under London, which have a small cross section.

Definition source: English Wiktionary via Wiktextract

Usage: UK

Topics: rail-transport, railways, transport

No example sentence was provided for this meaning.

Meaning relationships

Synonyms: none provided

Antonyms: none provided

History

Etymology

Probably named after the shape of the tunnels; the Tube is an informal name for London Underground which has been trademarked.