unrails

Verb

unrail (third-person singular simple present unrails, present participle unrailing, simple past and past participle unrailed)

1. (transitive) To remove the rail or railings from.
   • “You are tearing pickets from innocent fences,” said Town, and proceeded to unrail a respectable fence to procure weapons wherewith to “smash the'students' heads.”1907, Hamilton Literary Magazine - Volume 42, page 199
2. (ambitransitive, figuratively, literally) To derail.
   • If this wanton attempt to unrail or overturn the engine had succeeded, eight lives would have been sacrificed.1842, Bradshaw's Railway Gazette - Volume 2, page 152