Derail :: Derail (v. t.) To cause to run off from the rails of a railroad, as a locomotive..
Derailment :: Derailment (n.) The act of going off, or the state of being off, the rails of a railroad..
Derain :: Derain (v. t.) To prove or to refute by proof; to clear (one's self).
Deraination :: Deraination (n.) The act of pulling up by the roots; eradication.
Derainment :: Derainment (n.) The renunciation of religious or monastic vows.