noun
a locomotive that precedes a train to check the track
• Hypernyms: ↑locomotive, ↑engine, ↑locomotive engine, ↑railway locomotive
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noun : a locomotive going in advance of a train to make sure that the way is clear
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a locomotive sent on ahead of a railroad train to see that the way is clear and the track safe.
[1830-40]
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pilot engine noun
A locomotive sent before a train to clear its way, as a pilot
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Main Entry: ↑pilot
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pilot engine,
a locomotive sent on ahead of a railroad train to see that the way is clear.
Useful english dictionary. 2012.