Backfire
Part of speech: noun
Definition: A small, controlled fire set in the path of a larger uncontrolled fire, in order to limit the spread of the large fire by removing its fuel.
Part of speech: verb
Definition: (Of a gun or cannon) to fire in the opposite direction, for example due to an obstruction in the barrel. To fail in a manner that brings down further misfortune.
Boomerang
Part of speech: noun
Definition: A flat curved airfoil originally used in various parts of the world as hunting weapons or, in returnable types, for sports or training.
Part of speech: verb
Definition: To return to the starting point.To return or rebound unexpectedly, especially when the result is undesired.
Example sentence: The first home system we had was an Apple II, and I remember playing a game called 'Conan.' It should have been called 'Tarzan' because you were essentially Conan running around a forest with a boomerang, but it was obviously Tarzan.