4-6-4 is a palindrome (it reads the same backward as forward).View more palindromes!
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Definition of the noun 4-6-4
What does 4-6-4 mean as a name of something?
- Under the Whyte notation system, a steam locomotive that has four leading wheels arranged in a leading truck, six coupled driving wheels and four trailing wheels in a trailing truck.
4-6-4: Under the Whyte notation for the classification of steam locomotives, 4-6-4 represents the wheel arrangement of four leading wheels on two axles, usually in a leading truck, six powered and coupled driving wheels on three axles, and four trailing wheels on two axles, usually in a trailing truck. In France, where the type was first used, it is known as the Baltic, while it became known as the Hudson in most of North America.