A4

proper noun

A4 class, a class of steam locomotive used on the London and North Eastern Railway.

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Meanings

proper noun
  1. UKrail transportA4 class, a class of steam locomotive used on the London and North Eastern Railway.

    In a letter to the author he says that when he went to King's Cross in 1936 the A4s were, and had been for some time, at a low ebb in performance.

    1990, H.C.B. Rogers, Express Steam Locomotive Development in Great Britain and France, Crecy Publishing, →ISBN, page 89
Cite this entry
APA

A4. (n.d.). In WatkinsX Dictionary. Retrieved November 3, 2026, from https://dictionary.watkinsx.com/word/A4

MLA

“A4.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/A4. Accessed November 3, 2026.

Chicago

WatkinsX Dictionary, s.v. “A4,” accessed November 3, 2026, https://dictionary.watkinsx.com/word/A4.

Source: A4 on Wiktionary, CC BY-SA 4.0.