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21.
1 basing reasoning and argument on the premises of the following thinkers: de Saussure, Lacan, Althusser, Barthes.

2 used as 'ad hominem'.

3 (possibly pejoratively) saying someone is a postmodernist.
Ex. "You are such as Slab", i.e. "You are a fool".
by MPRosinski March 05, 2012
 
15.
A word used in the surfing world to describe a wave that breaks over a shallow slab of rock or coral, producing a thick hollow wave that is often notoriously difficult or dangerous to ride.

Popular with bodyboarders and daredevil surfers, slabs are often kept secret so that they do not become crowded.

Examples of famous slabs are Cyclops, Shipstern bluff, Dinner plates, Rileys, Ours etc.
I tried surfing that slab yesterday and ended up snapping my board
by stoken October 26, 2010
 
16.
The lower part of a females back, displayed when wearing a crop-top.

The area of the body used to locate a tramp-stamp.

Bob - "She's a nice sort!"
Matt - "Cracking Slab!"
Slab
by Quelmo Rodriguez June 25, 2010
 
17.
A female, usually young, who expresses the characteristics of a slut.

To put it simply;
A slab=a skank
What the hell, Kelly is such a nutgobbling slab , did you hear what she did at that party?
by SillyFannyBananaPants February 02, 2011
 
18.
A midwestern term, mainly Kansas City, that means a very large penis. A person who has a slab is said to be slabbing.
Tyler has a slab.
My girl was giving me shit, so I hit her in the face with my slab.
by boneslab January 10, 2012
 
19.
Easy to get; everyone done hit that.
That girl is the biggest slab I have ever seen
by foxcrazy55 August 07, 2011
 
20.
In da states dis represents candy painted cars,on 84 rims, a chromed lady on da hood and the trunk open must likely a open top car
Cuz you aint riding slabs if they aint swangas in yo ride
by Willy DaDon May 01, 2008