Slab (noun)

1. A flat, rectangular piece of stone, concrete, or wood, often used in construction or as a surface or support.
2. A thick, flat piece of food, such as meat or cheese.
3. A large, flat piece of rock or mineral, especially as found in a deposit or vein.

Origin:

From middle english slabbe, from old english slabbe, meaning "a flat piece of stone or wood.".

Examples:

1. The contractor laid the slabs to create the foundation for the new building.
2. The butcher cut a slab of ham for the sandwich.
3. The geologist examined the slab of rock to determine its mineral composition.
4. The sculptor carved the statue from a slab of marble.
5. The chef grilled a slab of salmon and served it with lemon and herbs.