Vibrodagger
From Wookieepedia, the Star Wars wiki.
A vibrodagger, or vibro-dagger, was a special type of small vibroblade wielded by, among others, the shadow troopers of the Grand Army of the Republic during the Clone Wars and Phase I dark troopers of the Galactic Empire. Dark trooper vibrodaggers also had a paralyzing effect.
During the Imperial era, assassins working for Imperial Intelligence used high-powered vibrodaggers. Though the technology behind these blades is not known in detail, the design was derived from research into the metallic worms called the Raen sovra.
Aurra Sing carried one.
One model of vibrodagger during the Galactic Civil War was the LaserHone Talon Vibrodagger. This model was often carried by Imperial Storm commandos.

