Slab
Slab or SLAB may refer to:

Physical materials
Concrete slab, a flat concrete plate used in construction
Stone slab, a flat stone used in construction
Slab (casting), a length of metal
Slab (geology), that portion of a tectonic plate that is subducting
Slab pull force, the tectonic plate force due to subduction
Slab suction, one of the major plate tectonic driving forces
Slab window, a gap that forms in a subducted  oceanic plate
Slab (fossil) and counter slab, the two counterparts of a fossil impression
Slab hut, a kind of dwelling  made from slabs of split or sawn timber
Slab of beer, a flat package containing a large number of cans of beer

Places
Slab Point, a rocky point in the South Shetland Islands, Antarctica

United States
Slab, West Virginia, an unincorporated community  in Ritchie County, West Virginia
Slab City, California, a locality in the Colorado Desert
Slab City, Wisconsin, an unincorporated community in Shawano County, Wisconsin
Slab Fork, a tributary of the Guyandotte River in southern West Virginia

Media and entertainment
Slab (comics), a fictional character in the Marvel Comics Universe
The Slab, a 2004 UK poetry anthology
Slab, a character in The Ripping Friends
Slab, a character in Doctor Who
SLAB!, 1980s industrial music group
The Slab, or Slabside Penitentiary, a metahuman prison in the DC Comics universe
Slab, a character in "Mr. Young"

Technology
Slab (unit), a 12-bit unit of computer memory on the NCR 315
Slab allocation, a computer memory management mechanism
Bar (form), a mobile phone form factor also known as a slab
Slab method, a ray-box intersection algorithm
Slab serif, a kind of typeface
Slab construction, a building method

Mathematics
Slab (geometry), the volume between two parallel planes

Organisations
Scottish Legal Aid Board
Silicon Laboratories (NASDAQ symbol)

Other uses
Coin slab is a coin holder which holds a coin that has been sealed in an acrylic or lucite holder
Slab of Bacon, a traveling trophy in American college football rivalry games
Thomas Murphy (Irish republican) (born 1946), nicknamed "Slab"
Student loan asset-backed security, an asset-backed security
"S.L.A.B. theory", a term coined by David Bordwell to refer to theories that use the ideas of Saussure, Lacan, Althusser, and/or Barthes
"Slab", a disc golf distance driver by Infinite Discs
Stupendously large black hole (SLAB), a hypothetical region of spacetime