spoiler

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spoil·er / ˈspoilər/ • n. 1. a person or thing that spoils. ∎  (esp. in a political context) a person who obstructs or prevents an opponent's success while having no chance of winning a contest themselves. ∎  an electronic device for preventing unauthorized copying of sound recordings by means of a disruptive signal inaudible on the original.2. a flap on an aircraft or glider that can be projected from the surface of a wing in order to create drag and so reduce speed. ∎  a similar device on a motor vehicle intended to prevent it from being lifted off the road when traveling at very high speeds.

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