derail$20333$ - meaning and definition. What is derail$20333$
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What (who) is derail$20333$ - definition

DEVICE ON A TRAIN LINE TO PREVENT TRAINS FROM PASSING BY DERAILING THEM
Derail (railroad)
  • Aldon Company hinged derail with automatic blue flag
  • A derailed train car at a closed siding
  • Aldon Company hinged derail installed on steel railroad ties
  • Aldon Company portable derail installed on concrete railroad ties
  • A&M]] in [[Rogers, Arkansas]]

Derail         
·vt To cause to run off from the rails of a railroad, as a locomotive.
derail         
(derails, derailing, derailed)
1.
To derail something such as a plan or a series of negotiations means to prevent it from continuing as planned. (JOURNALISM)
The present wave of political killings is the work of people trying to derail peace talks.
VERB: V n
2.
If a train is derailed or if it derails, it comes off the track on which it is running.
Several people were injured today when a train was derailed...
No-one knows why the train derailed.
VERB: be V-ed, V
derail         
¦ verb cause (a train) to leave the tracks.
?obstruct (a process) by diverting it from its intended course.
Derivatives
derailment noun
Origin
C19: from Fr. derailler.

Wikipedia

Derail

A derail or derailer is a device used to prevent fouling (blocking or compromising) of a rail track (or collision with anything present on the track, such as a person, or a train) by unauthorized movements of trains or unattended rolling stock. The device works by derailing the equipment as it rolls over or through it.

Although accidental derailment is damaging to equipment and track, and requires considerable time and expense to remedy, derails are used in situations where there is a risk of greater damage to equipment, injury or death if equipment is allowed to proceed past the derail point.