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

a thick slice of anything

a slab of bread.

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

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

Baseball Slang . rubber ( def. 14 ) .

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

to make into a slab or slabs.

to cover or lay with slabs.

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

to put on in slabs; cover thickly.

noun

bar , billet , bit , board , boulder , chip , cut , cutting , hunk , ingot , lump , muck , piece , plate , portion , rod , slice , stave , stick , stone , strip , wedge , bloom , shaft , chunk , tablet , tile , wood