steam engine

steam engine (plural steam engines)

1. A piston engine driven by steam (as contrasted, for example, with a steam turbine).
2. Any heat engine that uses steam as its primary working fluid to do mechanical work.
3. (especially British) A steam locomotive.

• boiler (steam boiler) (what supplies steam to the engine or turbine)

• steam power
• steam tractor
• steam locomotive
• steam shovel
• steam roller

• portable engine
• traction engine