The phrase "doomsday device" refers to a powerful weapon or technology that has the potential to cause massive destruction and bring about the end of the world or civilization. Full definition
In search of a new energy source, Russia accidentally reawakens the Kolossus — a giant robot doomsday device from the Cold War. (tubitv.com)
The arsenal of doomsday devices which we have at our disposal has also been made much more realistic in comparison to the production's archetype; however, there is no shortage of various weapon prototypes, such as the Tesla coil which electrocutes nearby enemies. (gamepressure.com)
Further, Russia designed its nuclear weapons arsenal as absolute doomsday devices that rain up to 10 high - yield nuclear warheads down on targets at Mach 23 in a salvo that the US can't possibly hope to intercept. (businessinsider.com)