n. a loud noise made by the explosion of fuel in the manifold or exhaust of an internal combustion engine
n. a fire that is set intentionally in order to slow an approaching forest fire or grassfire by clearing a burned area in its path
n. a miscalculation that recoils on its maker
v. come back to the originator of an action with an undesired effect
n. 逆火, 回火, 放火
vi. 放逆火, 预先放火, 发生意外