Boomerang, a missile of hard curved wood used by the Australian aborigines of 2½ ft. long; a deadly weapon, so constructed that, though thrown forward, it takes a whirling course upwards till it stops, when it returns with a swoop and falls in the rear of the thrower.
Definition taken from The Nuttall Encyclopædia, edited by the Reverend James Wood (1907)
Boole * Boone, Daniel