displacer

The planting of the Displacer was too important a thing for him to fumble again.

But twenty expeditions had failed to set up the Earth-end Displacer.

Over the centuries, the Grom scientists had developed the Displacer.

The Displacer pulsed, reminding him of the job he had to do.

I'll disguise myself as a Man, walk through the gate to the reactor room, and activate my Displacer.