Wiktionary
n. Pre-hardened plaster of Paris (gypsum) sold in large panels and used as a wall surface in building construction.
Usage examples of "sheet rock".
The wallpaper hung in strips, showing the white plaster and sheet rock beneath.
His father, who was a foreman at the sheet rock plant between Zephyr and Union Town, wore his hair exactly the same way.
At the elevator door, he stops, listens, the gun roaring five walls away, a few odd rounds sputtering through sheet rock, trailing clouds of gypsum dust and insulation.
Trees became more common, though still small and scrubby, and often we had grassed ground under us instead of sheet rock.
There was already a crowd of people on the site when they arrived, tramping through the red mud carrying lumber and sheet rock and working on the loosely framed structure.
Combat distance, a load of feird- or rabbit-shot works just fine, and the little bbs don't far after hitting couple of layers of sheet rock and .