4-4-6-4s

A form of 4-4-6-4 — Under the Whyte notation system, a duplex steam locomotive that has four leading wheels in a leading truck followed by four coupled driving wheels, a second set with six coupled driving wheels, and four trailing wheels in a trailing truck.

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Meanings

noun
  1. pluralplural of 4-4-6-4
Cite this entry
APA

4-4-6-4s. (n.d.). In WatkinsX Dictionary. Retrieved November 4, 2026, from https://dictionary.watkinsx.com/word/4-4-6-4s

MLA

“4-4-6-4s.” WatkinsX Dictionary, https://dictionary.watkinsx.com/word/4-4-6-4s. Accessed November 4, 2026.

Chicago

WatkinsX Dictionary, s.v. “4-4-6-4s,” accessed November 4, 2026, https://dictionary.watkinsx.com/word/4-4-6-4s.

Source: 4-4-6-4s on Wiktionary, CC BY-SA 4.0.