infernal machine

noun2

1. •
   (old-fashioned) A bespoke machine comprising a large bomb and an unmanned vessel or carriage carrying it to a target

   • The Prince of Orange likewise had recourse to the destructive effects of an infernal machine, in order to bombard Havre-de-Grace, and to set it on fire. — 1810
2. •
   (old-fashioned) A booby-trap or improvised explosive device

   • When a serious attempt was made upon Bonaparte's life by the explosion of an infernal machine, Fouché knew that the plot had been hatched and carried out by royalists […] — 1932