Simple Definition of derail
of a train : to leave its tracks
: to cause (a train) to leave its tracks
Full Definition of derail
1 : to cause to run off the rails
2 a : to obstruct the progress of : frustrate <security problems derailed the tour> b : to upset the stability or composure of <divorce … can seriously derail an employee — Joanne Gordon>
: to leave the rails
Examples of derail
The train derailed in heavy snow.
The train was derailed by heavy snow.
Origin of derail
French dérailler to throw off the track, from dé- de- + rail, from English
First Known Use: 1850
Rhymes with derail
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DERAIL Defined for Kids
Definition of derail
1 : to leave or cause to leave the rails <The train derailed.>
2 : to make progress or success difficult for <Injuries derailed his plan for a championship.>
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