Sentence:  "Don't worry, boy, I know the trick, / And to you I'm gonna show it. / If you want your <WSD>boomerang</WSD> to come back, / Well first you've got to... throw it." 
Meaning of the word marked with <WSD> tags:  A flat curved airfoil, that spins about an axis perpendicular to the direction of flight, that was originally used in various parts of the world as hunting weapons or, in returnable types, for sports or training.