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derail

play
verb de·rail \di-ˈrāl, dē-\

Simple Definition of derail

  • of a train : to leave its tracks

  • : to cause (a train) to leave its tracks

Source: Merriam-Webster's Learner's Dictionary

Full Definition of derail

  1. transitive verb
  2. 1 :  to cause to run off the rails

  3. 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>

  4. intransitive verb
  5. :  to leave the rails

derailment play \-mənt\ noun

Examples of derail in a sentence

  1. The train derailed in heavy snow.

  2. 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


DERAIL Defined for Kids

derail

play
verb de·rail \di-ˈrāl\

Definition of derail for Students

derailedderailing

  1. 1 :  to leave or cause to leave the rails <The train derailed.>

  2. 2 :  to make progress or success difficult for <Injuries derailed his plan for a championship.>





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