Before revision: Design, use, and sound A bullroarer consists of a weighted airfoil (a rectangular thin slat of wood about (6 in) to (24 in) long and about (0.5 in) to (2 in) wide) attached to a long cord.
After revision: Design, use, and sound A bullroarer consists of a weighted airfoil (a rectangular thin slat of wood about long and about Video of a bullroarer being swung to make a noise wide) attached to a long cord.