noun / verb
slab
SLAB/slæb/
A thick, flat piece of material, or to cover or form something with such pieces.
The thick stone slab has a broad flat top.
Etymology
The word’s origin is unknown, but its earliest English meaning already described a large, flat mass too thick to bend. It was first used of iron, later of wood and stone.
In context
it goes about three feet long now name of the game is to use some schedule 40 pvc pipe and use that as a ram rod to get under the slab or in this case sidewalk