pony engine (English, noun)
expansion: pony engine (plural pony engines)
Senses:
glosses: A small locomotive used for shunting wagons, etc.
glosses: A small gasoline engine serving as an auxiliary to a diesel engine (mainly in older designs from the 1930s to 1950s), providing heat to warm it up and, when engaged with a clutch, providing cranking to start it up.
tags: Canada
US
dated
Forms:
form: pony engines
tags: plural