4-6-6-4

Union Pacific 3977, a Challenger locomotive

English

Noun

4-6-6-4 (plural 4-6-6-4s)

1. Under the Whyte notation system, an articulated locomotive with four leading wheels on a leading truck, two sets of six driving wheels, and four trailing wheels on a trailing truck.

Anagrams

• 6-4-4-6