look up any word, like queefing:
 
4.
In vehicles:

A device attatched to a car- usually at the rear, that changes the aerodynamic shape of a vehicle, reduces drag- which does not add downforce- and acts as a rear diffuser, eliminating a vacuum effect at the rear end of the car and improving gas milage.

Often mistaken for a wing or airfoil, which does the opposite by creating drag.

Before you hit that down button, google wing vs. spoiler.
Often mistaken as a type of airfoil or wing, spoilers do not increase down force of the rear wheels, but actually reduce it.
by EDOLZ December 12, 2008
85 30
 
15.
Spoilers are experts from the real boom or story, that you may not know of yet. This is to tell you that if you have not read the book or story but plan to, but don't want to ruin it, to not read that fanfiction. The parts of the novel you may not know yet are written in the text. See fanfiction for more information on those.
"Hey Sarah, this now HP fic has spoilers in it for the new book. Should I read it?"

"Not if you want the boom to be a surprise, Judy".
by Jennvellcs November 02, 2007
14 17
 
16.
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
2 6
 
17.
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
5 10
 
18.
Girl's lower back tattoo.
Did you see her spoiler?

Nice spoiler babe.
by arkadow March 12, 2008
3 9
 
19.
Someone with a FAT FUCKING ASS
"Did you see the ass on that SPOILER?!"

"He might be bigger than beyonce!"
by THE DARK MAD WATERSLIDER March 18, 2010
0 7
 
20.
n. Describes utilizing the thumb in a L-shaped manner to maximize the speed and effect of a backhand or pimpslap to your ho's mouth (much like the effect of a spoiler on a riceburner). See BBG.
Ho - do you want the spoiler up or down for this one?
by wong-time November 03, 2008
1 8
 
21.
A person that succesfully busts another guy's game and takes his girl home.
I was all up on this chick last night and then this clown from my psych class came in and played spoiler and went home with her.
by Bar Masters October 02, 2008
1 8