A pice of bodywork usuall on the rear of a car which "spoils" the airflow, thereby creating downforce over the rear wheels. Which everyone knows except Will Rastall...

see also jessops
How am i supposed to know what a spoiler is?
by Tom Scott February 12, 2003
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when you are in a good mood and someone who with there very presence enters a room or talks to you and takes your entire good mood away.
sh!t, here comes spoiler...
you damn spoiler. That bra is such a spoiler!!!
by sidmoman October 21, 2008
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Basically means the dogs bollocks! it pretty much can't be beaten!
Yo Dave that Gammon you cooked for dinner was an absolute spoiler!

That girl I rinsed out last night was a right spoiler!!!
by Iceman0001 June 21, 2010
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An aerodynamic device used on tractor-trailer trucks. A spoiler is located on the roof of the tractor which deflects air from buffeting the trailer. Truck roof spoilers increase the top speed of the truck, save diesel fuel, and protect the refrigerator coils of refrigerated trailers from rocks that blow off of dump trucks.
The top speed of this Kenworth is 117 miles per hour, the same truck without the Spoiler only goes 113 MPH. By the end of the day I'm 64 miles ahead, because I have a Spoiler.
by AviationMetalSmith January 18, 2007
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A person who ensures their partner in crime is always satisfied in life and other pleasures
Man that dude is lucky hes dating a spoiler.
by Robyn Axton May 18, 2010
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To spoil the outcome of something (accidentally or on purpose)in a conversation; verbal or electronic, with another person. ie give away a movie ending, tv show, book etc

Often used with Spoilerer (someone who spoilered said movie/tv show for you)
"dude you totally spoilered that movie for me, you're such a spoilerer"
by monkeebot June 25, 2012
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The ruining of a surprise in a book, movie, tv program, etc.
So, Sasuke pwns Itachi only to discover that Itachi was a good guy and that he massacred his clan on orders from the higher ups. Turns out the entire Uchiha Clan was planning to take over the village. Ironic isn't it? Now Sasuke wants to crush the village.
Oh, and Snape is going to kill Dumbledore But he actually is good. And Harry will live.
Oops, I forgot to put a Spoiler Warning didn't I? Well, hope the Spoilers didn't ruin your day.
by Namahagetecno37 June 19, 2008
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