Same as Polychorus. Kurt had two of them apparently, and used them on the Unplugged show. However, I don't know what songs he used it on. I don't think he used it one any songs, but Guitar World says that he was arguing with MTV techs over the various qualities of the Echoflangers.
THE FORGOTTEN MARINES OF TARAWA. During late-November 1943 one of the most savage battles in the history of the Marine Corps took place on the tiny island of Betio, located in Tarawa Atoll. The capture of this island took three days and cost the lives of 990 Marines and Navy Corpsmen. In addition to these, another 2,200 were wounded.
A tarabagan is a rodent, also known as a Pharaoh's Rat. Many are found in the area between Eastern Europe and Asia, where they gained infamy for their role in the Black Death , a pneumonic plague that broke out in 1910 in Manchuria among hunters of tarabagan. Over sixty thousand people died in that epidemic.