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pilot engine

 - 2 dictionary results

pilot engine

–noun
a locomotive sent on ahead of a railroad train to see that the way is clear and the track safe.

Origin:
1830–40
Dictionary.com Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2009.
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pilot engine  
n.  A locomotive sent ahead of a train to check the track for safety and clearance.
The American Heritage® Dictionary of the English Language, Fourth Edition
Copyright © 2009 by Houghton Mifflin Company.
Published by Houghton Mifflin Company. All rights reserved.
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