Wiktionary
n. An extremely powerful weapon.
Usage examples of "superweapon".
Roasted alive in their glorious envelope of luxury mud, consumed by the avenging fire kicked up by the Batrachian superweapon, they had then been preserved for aeons by the silence and the thin atmosphere in this deep, protected place.
Initially they were blamed on some alien superweapon, a product of the conflict with the Draan.
The Lontastan Guardsmen blast away at an agent immediately, on the chance that he might be some kind of nut with a superweapon in his pocket.
They usually have an evil scientist in their gang or, at the very least, the benefits of futuristic science, such as superweapons, hypnotic rays, invisible spaceships or whatnot.
As the small craft rushed past, Han worked the controls and yanked out with the Millennium Falcon's tractor beam, latching on to the small superweapon.
In the 1930s Harry Truman had read lurid pulp magazine sf yarns of superweapons settling the hash of evil powers.