Meanings
plural 125s
- UKrail transportA high-speed train (HST) powered by two British Rail Class 43s, one at each end.
When I was an apprentice many years ago, the 125 used to come through Markinch station in Fife at 1.27pm every weekday.
2010 January 6, McKevvy, “Re: Could you safely lie between the rails of an HSL?”, in uk.railway (Usenet)2 more examples
How much rail horsepower does a 125 have? Well I don't have the actual TE curve on me here (it's at home) but I can approximate.
1999 June 16, Hoppy, “Re: HST from Paddington”, in uk.railway (Usenet)Most of the cheap tickets are valid on both 125s and Turbos - indeed some are ONLY available on 125s (eg First Plus London Day Out).
2003 December 1, Sean Marshall, “Re: Voyager/Meridian differences”, in uk.railway (Usenet)
Synonyms & antonyms
adjectivebeing five more than one hundred twenty
Synonym sets from Open English WordNet, CC BY 4.0.
Origin
From their maximum speed of 125 mph.
Full word history & related roots →Cite this entry
125. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/125
“125.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/125. Accessed November 3, 2026.
WatkinsX Dictionary, s.v. “125,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/125.
Source: 125 on Wiktionary, CC BY-SA 4.0.