Noun
A hypothetical weapon (often a bomb) programmed to automatically be used in response to certain attacks, usually with very dire consequences (such as the annihilation of the world).
An extremely powerful weapon.
Doomsday Device (plural Doomsday Devices)
Alternative spelling of doomsday device
The theme of this season is water, due to the flooding that the Doomsday Device Event caused at the end of Season 2. With a series of sea-based quests, players are keeping as busy as ever. Source: Internet
With a whopping splat from the "Doomsday Device" signature move they performed, the crowd at the First Union Center exploded with chants of "L-O-D!" Source: Internet