noun🔗ShareThe action of a locomotive or train leaving the rails along which it runs."The train's sudden derailment caused a major delay for commuters. "disastervehicleactionmachinetrafficChat with AIVocabulary GamePractice Reading
noun🔗ShareA pattern of discourse (in speech or writing) that is a sequence of unrelated or only remotely related ideas."The professor tried to explain the economic theory, but his lecture suffered a derailment when he started talking about his cat's unusual sleeping habits, then moved on to his favorite pizza toppings. "languagecommunicationmindlinguisticsChat with AIVocabulary GamePractice Reading
noun🔗ShareAn instance of diverting a conversation or debate from its original topic."The conversation about school lunches quickly experienced a derailment when someone started talking about the latest celebrity gossip. "communicationlanguagewordpointChat with AIVocabulary GamePractice Reading
