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slab

1 American  
[slab] / slæb /

noun

  • slabs
    plural
  1. a broad, flat, somewhat thick piece of stone, wood, or other solid material.

  2. a thick slice of anything.

    a slab of bread.

  3. a semifinished piece of iron or steel so rolled that its breadth is at least twice its thickness.

  4. a rough outside piece cut from a log, as when sawing one into boards.

  5. Baseball Slang. rubber.

  6. Building Trades. a section of concrete pavement or a concrete floor placed directly on the ground or on a base of gravel.


verb (used with object)

  • slabs,
    present (3rd person singular)
  • slabbed,
    past participle,  past
  • slabbing
    present participle
  1. to make into a slab or slabs.

  2. to cover or lay with slabs.

  3. to cut the slabs or outside pieces from (a log).

  4. to put on in slabs; cover thickly.

slab 2 American  
[slab] / slæb /

adjective

Scot. and North England.
  1. thick; viscous.


slab British  
/ slæb /

noun

  1. a broad flat thick piece of wood, stone, or other material

  2. a thick slice of cake, etc

  3. any of the outside parts of a log that are sawn off while the log is being made into planks

  4. mountaineering a flat sheet of rock lying at an angle of between 30° and 60° from the horizontal

  5. a printer's ink table

  6. (modifier) made or constructed of coarse wooden planks

    a slab hut

  7. informal an operating or mortuary table

  8. informal a package containing 24 cans of beer

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

verb

  1. to cut or make into a slab or slabs

  2. to cover or lay with slabs

  3. to saw slabs from (a log)

"Collins English Dictionary — Complete & Unabridged" 2012 Digital Edition © William Collins Sons & Co. Ltd. 1979, 1986 © HarperCollins Publishers 1998, 2000, 2003, 2005, 2006, 2007, 2009, 2012

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Conjugated Forms

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Past

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Etymology

Origin of slab1

First recorded in 1250–1300; Middle English noun slab(be), sclabbe; further origin unknown

Origin of slab2

First recorded in 1595–1605; apparently from Scandinavian; compare Swedish, Norwegian slabb “mire,” Danish slab “mud,” Icelandic slabba “to wade in mud”

Explanation

A slab is a great big thick piece of something. Your backyard patio, for example, might be made of a huge slab of concrete. A sidewalk is often composed of one cement slab after another — these are sometimes called paving slabs. You could refer to large pieces of stone or wood as slabs too. Even your lunch might be a slab, if it's a thick hunk of cheesy pizza or a huge slab of bread slathered with peanut butter. The origins of the word slab are unknown, though we do know it's been around since the thirteenth century.

Keep Reading on Vocabulary.com

Vocabulary lists containing slab

Example Sentences

Examples are provided to illustrate real-world usage of words in context. Any opinions expressed do not reflect the views of Dictionary.com.

See Examples For:

The golden slab loses a few crumbs over the tablecloth when cut and grabbed.

From Salon Aug. 11, 2026

I missed genuine Italian markets — the kind where they carve a slab of Parmesan out of a freshly cut wheel and offer you a piece to taste.

From Los Angeles Times Jul. 24, 2026

Scotland's largest city is set to welcome more than 3,000 athletes from 10 sports, all of whom have the ambition of leaving with a slab of metal resting on their chest.

From BBC Jul. 22, 2026

In the classroom, trainees crowded around instructor Luo Duocheng as he demonstrated slicing a slab of beef, marinating it, and skewering the meat to form identical kebabs.

From Barron's Jul. 2, 2026

After we dug a hole in the slack and poured a five-by-five-foot slab of concrete for our launchpad, Cape Coalwood was ready for its first rocket.

From "October Sky" by Homer Hickam

As orders flood into the restaurant via online food delivery services and a walk-up window, a butcher slices through whole chickens while one cook flips thin slabs of steak and chicken on a grill.

From Los Angeles Times Aug. 22, 2026

However, her rescue was complicated by the fact that four heavy concrete slabs were blocking the way.

From BBC Aug. 12, 2026

Cubes of delicately folded fettuccine, stuffed shells, slabs of lasagna.

From Salon Jul. 11, 2026

Others are fully collapsed, floor slabs stuck together.

From Barron's Jul. 6, 2026

Just a few slabs of sesame toffee remained next to a box of matches.

From "The Boy Who Met a Whale" by Nizrana Farook

Father Ariel’s jaunty voice echoed from where he was standing at the slabbed marble pulpit, as he smiled out at the congregation.

From Salon Mar. 31, 2024

For one thing Murray was rake-thin and slouchy, a gangly kid next to the slabbed and ripped power-players of the modern men’s game.

From The Guardian Jan. 11, 2019

Great sheets of it are slabbed up in front of government buildings and on the "peace line" that separates the Catholic Falls Road from the Protestant Shankill.

From Time Magazine Archive

At times, you become almost certain that you slabbed this hillside three days ago, crossed this stream yesterday, clambered over this fallen tree at least twice today already.

From "A Walk in the Woods" by Bill Bryson

When the soap has cooled, the frame is stripped and the soap slabbed as usual.

From Soap-Making Manual A Practical Handbook on the Raw Materials, Their Manipulation, Analysis and Control in the Modern Soap Plant. by E. G. Thomssen

The work of it was treated as a burden: the parting, the slabbing sulfur-scented grease to scalp for detangling, the heat pressing into a more manageable texture.

From Salon Jan. 31, 2021

Such a road can be very easily and cheaply built by bringing in a portable sawmill and slabbing the material on two sides to the desired face.

From Motor Truck Logging Methods Engineering Experiment Station Series, Bulletin No. 12 by Frederick Malcolm Knapp

Martha's cooking and the heavy work were slabbing muscle onto Waziri's lean, brown frame.

From Blind Man's Lantern by George Luther Schelling

Numbers 3 and 4 are for slabbing or converting round logs into square timber.

From Modern Machine-Shop Practice, Volumes I and II by Joshua Rose

His features were so refined as to be almost effeminate, and so regular that they would have been perfect if it had not been for that ill-fitting, slabbing mouth.

From Uncle Bernac A Memory of the Empire by Sir Arthur Conan Doyle

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