A self-contained motive power unit that burns fuel to boil water in a boiler, producing high-pressure steam. This steam is directed into cylinders to drive pistons, which turn the driving wheels through a system of rods.
Heard on the job
They're running the restored steam locomotive on the point of the excursion train this weekend.
Also heard as
- steamer
- iron horse
Related terms
Firebox
The combustion chamber of a steam locomotive where fuel is burned to heat water.
Tender
A specialized railcar coupled directly behind a steam locomotive to carry its fuel and water.
Diesel locomotive
A motive power unit that uses a diesel engine to generate electricity for electric traction motors.