A planet-wrecker was a sort of weapon carried by the Federation starship USS Enterprise in the year 2267.
History and specifics[]
These missiles utilized nuclear warheads to destroy entire planets. In the year 2267, James T. Kirk used two of these weapons to destroy a planet in the Orion sector, creating the New Orion Nebula. (TOS - Star Trek 2 novelization: Operation—Annihilate!)