Definition of slab
(Entry 1 of 3)
1
: a thick plate or slice (as of stone, wood, or bread): such as
a
: the outside piece cut from a log in squaring it
b
: concrete pavement (as of a road)
specifically
: a strip of concrete pavement laid as a single unjointed piece
c(1)
: a flat rectangular architectural element that is usually formed of a single piece or mass
a concrete foundation slab
(2)
: a rectangular building having little width with respect to its length and usually height
2
: something that resembles a slab (as in size, shape, or density)
backed up by a solid slab of reference material — The Times Literary Supplement (London)
3
: a hard plastic holder for a collectible coin and an identifying insert
slab
verb
slabbed; slabbing
Definition of slab (Entry 2 of 3)
1a
: to remove an outer slab from
slab a log
b
: to divide or form into slabs
2
: to cover or support (something, such as a roadbed or roof) with slabs
3
: to put on thickly
slab
adjectiveKeep scrolling for more
Keep scrolling for more
Keep scrolling for more
Keep scrolling for more
Test Your Vocabulary
Name that Thing: Flower Edition
-
- Name that flower

Can you spell these 10 commonly misspelled words?
TAKE THE QUIZ
A daily challenge for crossword fanatics.
TAKE THE QUIZLove words? Need even more definitions?
Merriam-Webster unabridged
Words at Play
Ask the Editors
Share slab
Time Traveler for slab
The first known use of slab was in the 14th century
See more words from the same century