Definition of light engine in US English:

light engine


  • A railroad locomotive running with no vehicles attached.

    ‘he had let a light engine out of the down loop’
    • ‘The light engine would then pull the con-cast loads for #2 Rod Mill from track 567.’
    • ‘As the 3040 accelerated in a cloud of dust, she was passed by another light engine, southbound sister 3039 returning from a helper shift.’