Under the Whyte notation system, a steam locomotive that has two leading wheels, six pairs of coupled driving wheels, and two trailing wheels.

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

plural of 2-12-2

plural of 4-12-2

plural of 2-12-4

Under the Whyte notation system, a steam locomotive that has a single-axle leading truck followed by six powered driving axles, and no trailing wheels.

Under the Whyte notation system, a steam locomotive, with six axles connecting twelve powered driving wheels, and no leading wheels or trailing wheels.

A timekeeping convention in which the 24 hours of the day are divided into two periods called ante meridiem and post meridiem.

plural of 2-12-0

plural of 0-12-0