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.

(rail transport) Under the Whyte notation system, a steam locomotive that has four coupled leading wheels, six coupled driving wheels, and a pair of trailing wheels. Also known in UK English as a "Pacific" locomotive.

Under the Whyte notation system, a steam locomotive that has four leading wheels on a leading truck followed by three sets of coupled driving wheels, and no trailing wheels.

plural of 4-6-2

plural of 4-6-4

plural of 4-6-0

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

Under the Whyte notation system, a duplex steam locomotive that has four leading wheels in a leading truck followed by four coupled driving wheels, a second set with six coupled driving wheels, and four trailing wheels in a trailing truck.

Under the Whyte notation system, a duplex steam locomotive that has four leading wheels in a leading truck followed by six coupled driving wheels, a second set with four coupled driving wheels, and four trailing wheels in a trailing truck.

plural of 4-4-6-4