411 REFERENCE · Wiktionary
4-6-6-4
Reference material by Wiktionary contributors. This retains its source identity and is not 411 news reporting.
English
thumb|Union Pacific 3977, a Challenger locomotive
Noun
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
en 4466 6-4-4-6
en Rail transportation