/ ˈspɔɪlə(r); NAmE / noun
1.
a part of an aircraft's wing that can be raised in order to interrupt the flow of air over it and so slow the aircraft's speed
—picture at plane
2.
a raised part on a fast car that prevents it from being lifted off the road when travelling very fast
3.
( especially NAmE ) a candidate for a political office who is unlikely to win but who may get enough votes to prevent one of the main candidates from winning
4.
a person or thing that intends or is intended to stop sb/sth being successful
5.
information that you are given about what is going to happen in a film / movie, television series etc. before it is shown to the public
6.
a newspaper story, book, etc. that is produced very quickly in order to take attention away from one produced by a competitor that appears at the same time