4-10 Definition
noun
Under the Whyte notation system, a steam locomotive that has four leading wheels on a leading truck followed by ten coupled driving wheels, and no trailing wheels.
Wiktionary
Under the Whyte notation system, a steam locomotive that has four coupled leading wheels, ten coupled driving wheels, and one pair of trailing wheels.
Wiktionary
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Other Word Forms of 4-10
Noun
Singular:
4-10
Plural:
4-10-0s, 4-10-2s