Definition of derail verb from the Oxford Advanced American Dictionary

     

    derail

     verb
    verb
    NAmE//dɪˈreɪl//
     
    [intransitive, transitive]Verb Forms present simple I / you / we / they derail
     
    he / she / it derails
     
    past simple derailed
     
    -ing form derailing
     
     
    jump to other results
  1. 1(of a train) to leave the track; to make a train do this The train derailed and plunged into the river. derail something
  2. 2(figurative) This latest incident could derail the peace process.
 
noun [countable, uncountable]
See the Oxford Advanced Learner's Dictionary entry: derail