Spoiler (aeronautics), a device to reduce lift in aeronauticsSpoiler (car), a device to modify air flow in order to increase fuel efficiency or improve handling in automobilesSpoiler effect (sports), a team that has been eliminated from the playoffs and beats a team requiring that win to advanceSpoiler (media), a comment that discloses plot details of a book, play, video game, film, or other narrative contentSpoiler effect, an individual unable to win an election or game for oneself but able to determine which player or candidate of two or more others will winSpoiler (security vulnerability), a computer security vulnerabilityBeam spoiler, a piece of material placed into the path of the photon beam in radiation therapy. reference
