Meanings
plural trainbows · alternative Trainbow
- informalrail transportA train with a pride flag livery.
The concealed message appears on Great Western Railway's (GWR) 'Trainbow' Intercity Express Train (IET) 800008.
2026 June 10, “Secret code on GWR Alan Turing Trainbow IET 800008 unnoticed”, in Exmouth Journal2 more examples
Most of the national train companies have committed one train out of their fleet to being a Trainbow, so there are about a dozen trainbows, out of the just over 15,000 trains in use in the UK.
2023 July 28, Ian Mansfield, “Greater Anglia reveals its first “trainbow” for Pride”, in Ian VisitsMany public-facing initiatives have driven this change to a more open railway society, most notably with the introduction of multiple Trainbow locomotives and units on the network, keenly spotted by many enthusiasts due to their unique liveries and names.
2024 May 15, Joseph Rogers, Railway Enthusiasm in Twenty-First Century Britain, Amberley Publishing Limited, →ISBN
Origin
Cite this entry
trainbow. (n.d.). In WatkinsX Dictionary. Retrieved November 2, 2026, from https://dictionary.watkinsx.com/word/trainbow
“trainbow.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/trainbow. Accessed November 2, 2026.
WatkinsX Dictionary, s.v. “trainbow,” accessed November 2, 2026, https://dictionary.watkinsx.com/word/trainbow.
Source: trainbow on Wiktionary, CC BY-SA 4.0.