deathtrap

noun2

1. •
   (informal, figurative) An extremely dangerous location, structure, or device.

   • Route 9 is a deathtrap; they should at least put up guard rails.
   • Dude, your car is a deathtrap! Get the brakes and the steering fixed.
2. •
   A plot device where a villain in a story puts a hero in an elaborate dangerous situation for the purposes of attempting a sadistic murder.