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. [ 1913 Webster ]
[くるわす, kuruwasu] (v5s) (1) to drive mad; to make insane; (2) to cause a malfunction; to put out of order; to throw out of kilter; (3) to derail (a plan, etc.)