4-4-4 Definition

noun

Under the Whyte notation system, a duplex steam locomotive that has four leading wheels in a leading truck, two sets of four driving wheels, and a four-wheel trailing truck.

Wiktionary

Other Word Forms of 4-4-4

Noun

Singular:
4-4-4
Plural:
4-4-4-4s

Words Near 4-4-4 in the Dictionary