# Oxo cube

> English word · Proper noun

## Definitions
1. The London Underground rail network.

## Etymology
Rhyming slang for Tube. Oxo is a brand of stock cubes.

## Source
Compiled from Wiktionary via kaikki.org (CC BY-SA). Data vintage: 2026-05-06.
Canonical page: https://plainspell.com/en/word/oxo-cube