bullroarer noun1 •A ritual musical instrument and means of communicating over extended distances, consisting of a slat of wood tied to the end of a thong or string, with which the slat is whirled so as to cause an intermittent roaring noise.The men and boys practiced not only the technique of twirling the bullroarer, but also the mock attack staged upon the person twirling it. — 1980 formsbullroarers
