The bullroarer,[1] rhombus, or turndun, is an ancient ritual musical instrument and a device historically used for communicating over great distances.[2] It consists of a piece of wood attached to a string, which when swung in a large circle produces a roaring vibration sound.
It dates to the Paleolithic period, examples dating from 18,000 BC having been found in Ukraine. Anthropologist Michael Boyd, a bullroarer expert, documents a number found in Europe, Asia, Africa, the Americas, and Australia.[3] In Ancient Greece it was a sacred instrument used in the Dionysian Mysteries and is still used in rituals worldwide.[4] It was a prominent musical technology among the Australian Aboriginal people, used in ceremonies and to communicate with different people groups across the continent.
Many different cultures believe that the sounds they make have the power to ward off evil influences.
Today we know that the bullroarer is a very ancient object, specimens from France (13,000 B.C.) and the Ukraine (17,000 B.C.) dating back well into the Paleolithic period. Moreover, some archeologists—notably Gordon Willey (1971, 20)—now admit the bullroarer to the kit-bag of artifacts brought by the very earliest migrants to the Americas.
The bullroarer, used always as a sacred instrument, is still employed in New Mexico, the Malay Peninsula, Ceylon, New Zealand, Africa, and Australia, and under the name of Rhombus it figured prominently in the Mysteries of Ancient Greece.