de·rail 
/dɪˈreɪl/ verb
de·rails; de·railed; de·rail·ing /dɪˈreɪl/ verb 1 [no obj] of a train : to leave its tracks
▪ The train derailed in heavy snow. 2 [+ obj] : to cause (a train) to leave its tracks
▪ The train was derailed by heavy snow. — often used figuratively ▪ His plans for becoming a professional football player were derailed [=ruined] by several injuries in college. ▪ The incident threatened to derail her career.
▪ The train derailed in heavy snow.
▪ The train was derailed by heavy snow. — often used figuratively ▪ His plans for becoming a professional football player were derailed [=ruined] by several injuries in college. ▪ The incident threatened to derail her career.
— de·rail·ment /dɪˈreɪlmənt/ noun, plural de·rail·ments
[count] ▪ train derailments [noncount] ▪ the threat of derailment ▪ derailment of the peace process
/dɪˈreɪlmənt/ noun, plural de·rail·ments [count] ▪ train derailments [noncount] ▪ the threat of derailment ▪ derailment of the peace process
