railroad train,
train public transport provided by a line of railway cars coupled together and drawn by a locomotive; "express trains don't stop at Princeton Junction"
cowcatcher,
fender,
pilot,
buffer a barrier that surrounds the wheels of a vehicle to block splashing water or mud; "in Britain they call a fender a wing"
footplate the platform in the cab of a locomotive on which the engineer stands to operate the controls
iron horse (c. 1840) an early term for a locomotive
pilot engine a locomotive that precedes a train to check the track
shunter a small locomotive used to move cars around but not to make trips
locomotive -
Of or relating to the power unit of a train which does not carry passengers or freight itself.
Wikipedia
A locomotive is a railway vehicle that provides the motive power for a train. The word originates from the Latin loco – "from a place", ablative of locus, "place" + Medieval Latin motivus, "causing motion", and is a shortened form of the term locomotive engine, first used in the early 19th century to distinguish between mobile and stationary steam engines. A locomotive has no payload capacity of its own, and its sole purpose is to move the train along the tracks.
OmegaWiki Dictionary
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locomotive A self-propelled engine driven by steam, electricity or diesel power and used for drawing trains along railway tracks.