使出軌出軌,脫軌器
Derail \De*rail"\, v. t. [imp. & p. p. {Derailed}; p. pr. & vb. n. {Derailing}.] To cause to run off from the rails of a railroad, as a locomotive. --Lardner.
derail v 1: cause to run off the tracks; "they had planned to derail the trains that carried atomic waste" 2: run off or leave the rails; "the train derailed because a cow was standing on the tracks" [syn: {jump}]