Cambridge Dictionaries online Cambridge Dictionaries online

The most popular online dictionary and thesaurus for learners of English

English definition of “derail”

derail

verb [I or T] (TRAIN)    /ˌdiːˈreɪl/
If a train derails or is derailed, it comes off the railway tracks.Accidents involving vehicles derailment     /-mənt/ noun [C or U] There's been a derailment just outside Crewe, and many people are feared dead.Accidents involving vehicles
(Definition of derail verb (TRAIN) from the Cambridge Advanced Learner's Dictionary & Thesaurus © Cambridge University Press)
Focus on the pronunciation of derail

More definitions for “derail”

Definitions of “derail” in other dictionaries

Word of the Day

friendship

a situation in which two people are friends

Word of the Day

Blog

Read our blog about how the English language behaves.

Learn More

New Words

Find words and meanings that have just started to be used in English, and let us know what you think of them.

Learn More