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4-8-8-4

4-8-8-4 is a palindrome (it reads the same backward as forward).

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Definition of the noun 4-8-8-4

What does 4-8-8-4 mean as a name of something?

noun

  1. Under the Whyte notation system, a Mallet-type locomotive with four leading wheels on a leading truck, two sets of eight driving wheels, and four trailing wheels on a trailing truck.

Explanation

4-8-8-4: In the Whyte notation for the classification of steam locomotives by wheel arrangement, a 4-8-8-4 is a locomotive with a four-wheel leading truck, two sets of eight driving wheels, and a four-wheel trailing truck. 4-8-8-4s are commonly known as "Big Boys".

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